This is a workaround, not a fix for move errors. So the last few days I've been discouraged because I had some nice loot on scav runs, but when I would transfer the loot to my stash, I would get a move error and lose all of my scav loot. Then last night I was ready to just give up on scav runs and put my 4 mil to use leveling up and learning to get better at this game. I had a pretty nice run on woods and came out with an Adar with hammer optic and a suppressor attached, I went to sell the items and upon going to claim my 187K rubles from the sale, I got a move error and the money disappeared. Then today it also happened with my insurance returns. Through research I learned that any item transfers from the messages screen will come back and let you try again upon a re-log. So through messing with those transfers today, here is what I learned.
Right before all of these issues started, I went to buy 5 AI-2 med-kits, I accidentally fat fingered and bought 50. I noticed that all of those cheeses filled up the top of my stash like they should with the exception of the fact that the far right column didn't fill up with them, they stayed empty, as pictured in the second photo here:
So what I learned by messing with my insurance transfers and money transfers that were failing today with the move error is this: The game is bugged to think that there are items already in the 5 cells starting from the top on the far right column. Or at least something like that, either way, I only receive move errors if I move items to at least one of these cells.
I have no idea why this is, but because of where my cheeses were located in my stash, every time I ctrl clicked an item from my scav or the messages transfers, it ended up in one of those cells and it then reversed the move and gave me the error. I have tested moving items in every other cell with no errors, it is only these 5 cells. I was about to give up on the game for awhile because every time I had a good run it seemed this would happen and I couldn't keep scav loot or sell items. Anyways, I hope this helps someone else out there. I'll see you all in Tarkov, keep your head on a swivel.