Heroes 6 - Discussion

Hello everyone. I've encountered a problem. I recently bought 6 Heroes games on Steam during a sale. I linked them to the same account as my Uplay account. So, I have 2 Heroes games and 6 on one account. Not only does my Steam version not have the save files from my Uplay version (everything starts from level 1, but I understand this is the case for everyone), but something strange is happening with my Uplay version. When I launch the Uplay version, it tells me that I need to update something (even though I have patch 2.1.1 installed, and I updated it a long time ago, even before buying the Steam version). I start the update. It's not a large file. It starts doing something, and then BAM, it throws an error. Then it launches Heroes, and in the Uplay version, everything is reset to zero. But I had everything unlocked: weapons, dynasty trophies, all Campaigns, and the dynasty was maxed out. This scared me a lot. Do I have to start all over again? I already regret buying the Steam version. What should I do? How can I restore my "old" save files to the Uplay version of the game? And is there a way to link this to the Steam version as well? I don't want to have to unlock and level up everything again in the Steam version. P.S. How can I unlock Campaigns without playing through them? I remember that I need to change something from "off" to "on" somewhere. But where? In which file?