SSC 17.10: Can I use FPR scan/audit dates instead of upload/approval dates?

We have years of FPR files saved from using just SCA and Workbench in the past, but have decided to start using SSC as well. Unfortunately, when I uploaded all the FPR files to look at what the trends look like so far, the trend graphs and reports all used the upload/approval dates. Since I uploaded these all on the same day, this is not helpful at all.

Aside from uploading 1 FPR per day in chronological order, changing the server's system clock before each upload, or manually editing the upload dates in the database to match the scan dates, is there any way to change this behavior so I can look at historical data more accurately?