TYPO3 Core

OK. I get the idea, but this seems rather a logic like import/export where UIDs and references are rewritten. Doing this in TYPO3 Backend will probably kill the PHP memory_limit. I don't think we will do this in TYPO3 Backend, even though I see the point of having this functionality.

Could we handle this by mechanisms that plug into the rewriting-process? For example marking fields to tell TYPO3 core that they contain page-uids (and need to be rewritten as well on import) or providing hooks that can rewrite more complex fields that possibly contain pids or URIs (for example links like "t3://page?uid=...").