Lost all vehicle progress in Battlefield 2042

Similar issue on PS5. Attachments and mastery levels unlocked on several weapons and vehicles, progress bar is sat at 0 for some - but not all. This bug seems to be linked to another issue, described below.

Fresh map, can't spawn anywhere. Tried waiting until we take the first objective, waiting until a vehicle driven by friend on voice chat has a confirmed spare seat, mashing X wildly... Nada. Only thing that works is tapping modify loadout, then backing out and hitting spawn. Weirdly this always drops you in, but with a vanilla DM7 recon loadout. As soon as you've done this, your progress is gone. So far all unlocked attachments for weapons remain unaffected, but for vehicles everything gets removed, back to vanilla. (This is how I first noticed anything going on, hard to miss if repair isn't there when you need it) Still have access to the unlocks, but you have to close 2042 completely, load in and sort out attachments again. Exiting server, applying changes and reloading does not fix.

Only noticed tonight that the counts had also reset, and being pretty pissed off that I'd lost all progress between checkpoints on most weapons and vehicles, I am definitely done for the night. Will test more in the morning, to confirm if the two issues are linked or separate.