Upgrading & Compatibility

This section covers what changes about Grid Elements' own data across a TYPO3 version upgrade, the tools available to repair that data if something goes wrong, and what does (and does not) differ in restriction enforcement between the TYPO3 versions this branch supports. It is not a changelog; historical release notes belong in the extension's own changelog, not here.

Upgrade Wizards	The data-repair commands available for Grid Elements' own fields, and when a project actually needs them.
Data Compatibility Across TYPO3 Versions	The `colPos` signed/unsigned issue and why it matters specifically during a TYPO3 Core version upgrade.
Restriction Enforcement Across Versions	Whether `allowed`/`disallowed`/`maxitems` enforcement differs between the TYPO3 versions this branch supports.