Campaign saves corrupted/missing

some time ago, i was playing my imperial navy campaign after i heard there were some buffs and changes i downloaded the beta and played multiplayer for a few hours. when i loaded up the main game and went to load up my campaign i found out that all of the saves were completely gone, (autosaves and manual) having almost completed the imperial navy campaign i tried to get them back i even went back on to the beta and checked if the campaign had been copied over, (it wasn't) was just wondering if there is still someone to get my old saves back?

Hey @Lanion
Now that there is no longer a beta branch, are you still missing your saves?

@jellyfoosh yes because i just updated the game today 28/03/19 and my new campaign which i had started was also gone