Pro tip: before reset make sure you back up your BMU data for a potential restore using special function 'Write learned value (change ECU) - Learning value Read & save". This creates a LNDxxxxx.log file in C:\MUT3_SE\Temp\LNDDATA directory. The backup, to my knowledge, contains more information than the two values that can be written using the manual fallback procedure (Sum total time, i.e. battery secular age, and Chrg&dischrg integrated current, i.e. cycles - which is incorrectly referred to as "Travel distance” in the menu).
Once you do that can you please PM me and generously send me your backup
Regarding my comment about DBCAM slots, I've since learned from the documentation that the newest measurement always takes the top position, pushing all others down, i.e. there is no risk of running out of data slots.