File and Folder Compatibility

Source and destination systems can disagree about valid names, letter case, path depth, and how many items a folder can contain. Review these rules before moving data between unlike systems.

Case and Accent Matching

Mover compares names without regard to case or accents. It treats names such as Report.csv and report.csv as the same path even when a provider can store both.

When several source or destination items have the same normalized name, Mover skips the duplicates and records the conflict in the run log. A single source file can overwrite a destination file whose name differs only by case when their reported sizes differ. Rename case-only or accent-only duplicates before the live migration.

Unsupported Names

Mover cannot transfer names containing a backslash or null character, or path components with trailing whitespace. A provider can impose additional filename, reserved-name, path-length, or file-type restrictions. The relevant connection page documents known provider-specific behavior.

Folder Limits

Mover supports up to 100,000 items in one folder and a maximum folder depth of 50 levels. A folder beyond either limit is recorded as a failure. Even below the item limit, smaller folders usually list faster and are less likely to time out on collaboration services.

A dry run is the safest way to find naming conflicts and folder-limit failures before data is transferred.