AI Coding Tool Account Bans: A Context Asset Migration Guide

Key takeaways

• Accounts, subscriptions, and most session histories generally cannot be transferred. What can usually be carried over are custom instructions, project rules, and long-term memory stored in local configuration.
• The goal is not a one-click, lossless move. It is a migration that is as complete as possible, verifiable, and reversible. Items that cannot be migrated automatically should be listed and added manually.
• Five-step migration: build a unified intermediate representation → structure instructions and rules → rebuild long-term memory from facts → perform security validation and idempotent writes → verify consistency and test rollback.
• Four prerequisites before migration: full backup, credential cleanup, dry-run, and a rollback drill.

1. Background: regional fingerprint risk-control rumor

An analysis circulating in technical communities, allegedly based on reverse engineering of a tool, claims that the tool reads local time-zone information and network egress IP information to infer a region, then writes the result into the date line of the system prompt. The publisher, the affected tool and versions, the publication date, and any links should be verified by readers. This article could not independently verify the analysis, and there was no official confirmation. Some users later reported account bans, but the idea that bans are primarily based on time-zone fingerprinting remains a claim and should not be treated as a conclusion.

A few necessary clarifications:

• This article does not encourage reverse engineering other people’s software. The related content is only for technical discussion and may involve licensing or compliance issues. It is not directed at any specific vendor.
• Do not forge time-zone, IP, or similar information to bypass risk-control mechanisms. Doing so may violate the tool’s terms of service.
• Behavior may differ across versions. When reading this kind of analysis, distinguish between “confirmed,” “possible,” and “version-dependent.”

For migration purposes, the most useful lesson is simple: accounts belong to service providers; rules, instructions, and memory belong to you. The earlier you export them into a tool-independent format, the better your risk resistance.

2. Context asset layers: what can be migrated and how

Layer	Typical content	Can it be migrated?	Migration method
L0: Account and subscription	Login credentials, plan entitlements	No	Re-register or subscribe according to the new tool’s terms
L1: Session history	Historical conversations, context records	Mostly no	If an export function exists, save it as an archive and manually extract conclusions
L2: Custom instructions	Global response style, language, technical preferences	Yes	Split into atomic items and convert them into a unified intermediate representation
L3: Project rules	Code standards, directory conventions, commit conventions	Yes	Keep them with the codebase and manage them in Git
L4: Long-term memory	Facts and preferences “remembered” by the tool	Partially	Filter, desensitize, annotate sources, and rebuild
L5: Credentials and secrets	API keys, tokens	Should not	Reconfigure in the new tool using environment variables or a secret manager
L6: Implicit context	Verbal agreements, implicit habits already adapted by the tool	Mostly no	Write them down and convert them into L2 or L3 items

3. Before migration: backup, clean credentials, dry-run, and rehearse rollback

1. Back up completely first. Copy the tool’s configuration directory under the user home directory as a whole, for example ~/.tool-backup-YYYYMMDD/, then run git init and make the first commit. This way, every later change can be diffed and restored.
2. Scan and remove credentials. Before publishing or committing backups or intermediate files, scan the directory with:

grep -rniE 'api[_-]?key|token|secret' <dir>

If a secret is found, delete it immediately and rotate it. Credentials should be reconfigured in the new tool and should not be migrated as assets.

1. Run a dry-run before writing. All write scripts should first output only “what will be written and where.” Confirm manually before executing the actual write.
2. Perform a rollback drill. Deliberately write one incorrect item, then restore it using the rollback steps. This verifies that the backup is actually usable.

4. Unified intermediate representation: the “transfer format” for migration

Do not translate Tool A’s format directly into Tool B’s format. First convert everything into a neutral JSON manifest. After that, when adding a new tool, you only need to write one importer and one exporter.

{
  "schema_version": "1.0",
  "exported_at": "2026-09-01T10:00:00+08:00",
  "items": [
    {
      "id": "rule-ts-no-any",
      "type": "rule",
      "scope": "global",
      "content": "Do not overuse any in TypeScript projects; prefer concrete types or unknown with type narrowing.",
      "source": {
        "tool": "Tool A",
        "version": "to be recorded",
        "path": "~/.toolA/CLAUDE.md or other instruction files",
        "captured_at": "2026-09-01"
      },
      "version": 1,
      "sha256": "hash computed from content",
      "tags": ["typescript", "code-style"]
    }
  ]
}

Field descriptions:

• id: stable and unique. It is recommended to use a “type-topic” naming pattern. This is the idempotency key for the entire workflow.
• type: instruction, rule, or memory.
• scope: global or project:project-name.
• source: records the source tool, version, file path, and capture date for later review.
• version: increment this when the content changes materially.
• sha256: used to detect duplicate entries and verify write results.

5. Structured instructions and rules: one item should say only one thing

The most common mistake during migration is copying an entire paragraph of explanatory text. New tools often follow clear, itemized rules better than long paragraphs. Each rule should ideally have four elements: one id, one executable statement, one scope, and an example or counterexample when necessary.

Example instruction file in Markdown, with each item corresponding to the intermediate representation:

# Global instructions (migrated from Tool A; see context.json for sources)
- [rule-ts-no-any] Do not overuse any in TypeScript projects; prefer concrete types or unknown with type narrowing.
- [rule-commit] Use Conventional Commits for commit messages, such as `feat: add login form`.
- [rule-language] Use English for responses and code comments by default.

After migration, each rule should be locatable by id across the “intermediate representation → source file → target file” chain.

6. Rebuild long-term memory from facts: filter first, then desensitize

Long-term memory is not a copy of all old records. It should be a filtered set of facts, and each item should be traceable to a source.

Filtering rules:

• Discard: temporary task states, such as “currently fixing a bug”; outdated conclusions, such as an already overturned version judgment; and unrelated casual conversation.
• Keep: reusable personal preferences, long-term technical constraints, and stable project facts.

Desensitization rules:

• Replace absolute paths with placeholders such as <project-root>.
• Delete hostnames, internal network addresses, accounts, and secrets.
• If you are unsure whether something is sensitive, do not migrate it by default.

Each memory item should include its source and date. If something goes wrong later, you can trace it to the original source and roll it back precisely.

Memory item	Processing result	Note
User prefers English responses	Keep	Add source and date
Project uses pnpm instead of npm	Keep	Long-term technical constraint
Last week, fixing login timeout	Discard	Temporary task state
Production database is at 10.x.x.x	Discard and rotate	Sensitive information; do not migrate as an asset
“A version of a framework is unsafe”	Verify	The conclusion may be outdated; confirm before deciding whether to keep it

7. Security validation and idempotent writes

1. Idempotency: use id as the unique key. Before writing, check whether an item with the same id already exists in the target. If it exists and the hash is the same, skip it. If the hash is different, flag a conflict and let a human decide whether to overwrite or keep it.
2. Atomic writes: first write to a temporary file, verify it, and then replace the formal file. This avoids leaving a half-written configuration if the process fails midway.
3. Isolated testing: for the first import, use a test project or a temporary user directory. Confirm that everything is correct before writing to the global configuration.
4. Zero tolerance for credentials: secrets must not appear in the intermediate representation or import logs. If one is found, delete it immediately and rotate it.

8. Consistency checks and rollback

Validation checklist:

• Item count consistency: number of items in the intermediate representation = number of successful writes + number of explicitly skipped items.
• Hash spot-check: randomly select several items and compare content hashes.
• Replay test: ask the new tool to restate key rules and check whether they match the original.

Rollback steps:

1. Stop writing and preserve the current logs.
2. Use git checkout to restore the pre-migration commit. If there is no version control, restore from the backup directory.
3. Clean up newly added items by listing the difference by id and deleting them.
4. Record the failure reason, fix the importer, and rerun the dry-run.

9. Migration checklist

Asset item	Source location	Target format	Validation method	Failure rollback action
Global instructions	Tool A user-level configuration directory	Target tool user-level instruction file	Restate key rules	Restore configuration file with Git
Project rules	Project rule files	Target tool project-level rule file	Fixed-prompt before-and-after comparison	Restore project files
Long-term memory	Tool A memory file	Target tool memory file	Item count and hash verification	Delete newly added items
Credentials	Secret manager or environment variables	New tool environment variables	Call one minimal request	No rollback needed; reconfigure
Session history	Export function, if available	Local archive document	Manual spot-check	No rollback needed

10. Check differences between tools one by one

Configuration paths and formats vary greatly between tools and can change with versions. The table below only lists the items to check. Fill them in according to the official documentation on the day of verification, and record the version and date.

Check item	Tool A	Tool B
Version and verification date	To be filled	To be filled
Global instruction file path	To be filled	To be filled
Project rule file path	To be filled	To be filled
Long-term memory location	To be filled	To be filled
Official export support	To be filled	To be filled
Import method and limitations	To be filled	To be filled

How do you migrate configurations for tools such as Claude Code and Cursor? The approach is the same: first locate the rule files and memory files, convert them into the intermediate representation, and then import them into the target tool’s format. For exact paths, refer to the official documentation.

11. Post-migration verification and troubleshooting “missing memory”

After migration, perform an acceptance check:

• Use a fixed set of prompts to test the old tool, if it is still accessible, and the new tool. Compare whether their responses follow the same rules.
• Check whether the memory file was actually written, and whether the item count and hashes match the manifest.
• Open a new empty project to see whether the global instructions take effect.

Common troubleshooting:

Symptom	Possible cause	Handling method
Rules do not take effect at all	Wrong file path or format	Check the path and format against the official documentation
Some rules fail	Long paragraphs are ignored, or items conflict	Split into atomic items and check whether ids are duplicated
Memory items are missing	Filtered by the filtering rules, or skipped during writing	Check the import log to confirm whether the item was intentionally discarded or failed
Memory content is wrong	The source itself is outdated	Use the source field to trace the original file and verify it
New tool behaves abnormally	Secrets or sensitive configuration were accidentally carried over	Roll back immediately, clean up, and retry

12. What cannot be migrated and compliance reminders

The following cannot be migrated automatically and require manual re-entry or acceptance of loss:

• Session history and implicit context;
• Tool-specific memory formats;
• Account entitlements and subscriptions;
• Secrets and credentials, which should be reconfigured in the new tool.

One final reminder: during migration, do not forge time-zone, IP, or similar information to evade any risk-control mechanism. Doing so may violate the service terms. Also, do not commit backups or intermediate files together with secrets to a public repository. Keeping assets under your own control is the most reliable way to handle account-ban risk.