Can manually unlocking the door reset things?

[RhythmMachine]

Got in the car a couple of days ago, went to move the seat to my memory setting, and nothing happened when I pushed the button, even though the seat wasn't in my position. I thought maybe my wife had overwritten my settings with hers, but when I moved the seat manually and pushed the recall button again, it didn't move back as expected. Tried the other memory recall button and same thing: both seat memory positions seem to have been cleared.

Then, today, I turned on the radio for the first time since before the seat memories were erased, and noticed that it was both on a different station and sounded thin... looked at the EQ settings and everything was reset back to 0, so the sound settings were erased, too.

Trip computer still shows fuel efficiency, distance travelled, and so on from before, so that one wasn't reset.

We haven't had any battery issues (just replaced it a couple of months ago) and nothing else odd happening, except that my wife's key fob battery was dead, so she unlocked/opened the door manually the day before. Could that be it? I can't think of anything else that may be causing it, but I'd rather not lose all the settings again, so if I can figure out how to avoid it that would be great.

2012 X5 E70 3.0 inline six N55.

Any ideas?