Tabula Rasa in Boinc-Folder for new S5R5 Einstein-Run

Hm. I'm currently looking into the data file deletion stuff on the server side (scheduler), but the behavior you describe looks like a bug in the Client. Honestly I don't know whether there is a Client version that doesn't have this.

I'd suggest detaching from Einstein@home and then attaching again, though I have seen Clients that don't clean up all project information when detaching.

If you don't want to got through the attach process again manually you could save a copy of account_einstein_phys_uwm.xml file from your BOINC folder somewhere, detach from the project (deleting the original file) via the Manager, drop the account file backup back in the BOINC folder and stop & start the Client. This should automatically re-attach to Einstein@home.

BM