Do I need to keep old project files if all segments are in TM?

Hi everyone

In preparation for GDPR, I'm trying to minimise the personal data I hold by removing identifying information from all my project files. As I use Trados for almost all my projects, this involves quite a lot of duplication of effort - I have to do the original source file, the target file, the XLIFF and the TM. However, the project files generated by Trados also contain duplicates of the source and target files - without these, the project does not load. Therefore I am facing the prospect of redacting the same document up to six times.

My question is: As all segments are saved to the TMs anyway, are there any compelling reasons to hold on to the XLIFFs and associated Trados project files once the project is finished?

Apologies if this is a silly question - my brain is fried by this point!

Best wishes,

Ruth Grant