Data recently lost without user action

From speaking with a client, I seemed to have lost data from my database - a record which was appearing in a list yesterday is now not. I’ve checked and it’s child records (via relationship) still exist in the database but the parent record is just gone - has anyone else has any recent data lost?

I know the record did exist because all of these records are added to a google sheet and it is in there…

My app has no functionality on the front end for a record of this collection in particular to be deleted.