Paths settings in Sharepoint

We have moved our project data to Sharepoint.

Setting of reference paths in Reference Manager can be solved by enabling "Save relative path" during.

How can setting of paths to files in the Raster Manager be solved?

Example: I (user01) attach files (e.g. aerial photos) via Raster Manager using absolute path "C:\Users\user01\company\projects - data\aerials\dop.tif".

If my colleague (user02) opens the dgn-file the attached files cannot be found because of the different user name. I believe this is an sharepoint-issue.

It seems, that the Raster Manager does not support relative paths (as the reference manager does).

I would appreciate some of your ideas.