Half of my Steam Cloud assets are dead now#3047

I just noticed that after cleaning the cache my Monopoly Deal map started throwing errors “unsupported file format”. It was working fine for about a year.

All the files were uploaded through the game and use steamusercontent-a.akamaihd.net. There is no consistency for why they are broken - it’s completely random

I don’t wanna reupload ~100 files again, please help

Links:
Map: https://steamcommunity.com/sharedfiles/filedetails/?id=3286283698

Broken Image example: https://steamusercontent-a.akamaihd.net/ugc/2455103911384645110/DB3DCA68D7AC035FD220EB2C0F5DB95AEA679B0C/

Working image example: https://steamusercontent-a.akamaihd.net/ugc/2453977469321686150/93BE04BC3EA9A5242532AF4D739CF8BBE85B7D17/