WARNING this MIGHT fix your game, but it also involves deleting your current saved data, so keep that in mind. I can't guarantee it will work, but it worked for me.

So you load up Xenoverse 2 and you get to the part where you're supposed to upload your Xenoverse 1 data and it says it can't find it. You know you have Xenoverse 1 data, you have Steam Cloud enabled and your saves should be in the proper locations, so why isn't it working?

I had the same problem, here's how I fixed it:

1: I opened DBXV2 and then exited with ctrl+esc at the start screen (I believe this ensures that the dates on the hardward save and steam cloud save are similar enough to not automatically update)

2: I then went to my File Explorer, opened up Windows (C:), then Program Files (86) and searched for DBXV2. Inside of DBXV2 is DBXV2.sav which I right clicked and opened with Notepad. I pressed ctrl+a and then just hit backspace and it wiped the document, after this I saved the empty Notepad doc and exited it (I did not delete anything, except the text inside the doc).

3: After that I went back to DBXV2 and started it up, it said that the file was corrupted and asked me to make a new one; I did and it asked me whether or not I wanted to upload my xenoverse 1 data and this time it allowed me to upload my stuff.

IMPORTANT NOTES:

If you DO NOT have a save file already you will need to make one. Basically just let it load a game without your uploaded DBXV stuff, make a throw away character and then as soon as you load into Conton City exit the game and turn it on again THEN follow the instructions.

The guides the other people are sharing may not work, because the cloud might restore the game files even if you turn off the cloud for DBXV2 (I don't know why it does this, but it won't restore it if you use Notepad and simply empty it instead of deleting it)

If this doesn't work, then look up how to delete cloud saves, delete the cloud save of dbx2 and then delete the save on your computer (same location as in step 2). This way you're just getting rid of the backup save instead of tricking the system into not loading the backup save.

If you don't use the default save location for your files (or if for some reason your default location isn't the same as mine), then you'll have to find where ever you saved your game in order to do this. ALSO you may want to move DBXV.sav to where ever it would be by default because that might be why it can't locate it. The location of the DBXV2 folder and DBXV.sav file have to be in the same folder and DBXV2 has to be oriented toward that path; my suggestion is just do the default save locations unless you know what you're doing.

If you have more than one steam account active on your computer then there can be more than one DBXV2.sav file. In which case you're going to need to go to Program Files (86)>Steam>userdata> and from here you'll see a number of files equal to the number of steam accounts you have on your computer. Unfortunately these folders don't have your steam account names on them; they are listed with numbers. I'm not sure how to determine which of these folders correlates to which account, so good luck with that. Once you find the right one you'll be greeted with a number of folders equal to the number of games you have saved games in with different id numbers. Fortunately DBXV1 and DBXV2 are both in the one labeled 323470. In 323470 open the remote folder and then you'll see your DBXV2 folder which contains DBXV2.sav and DBXV.sav (assuming that you use the default saving path for your games). Basically if you have more than one account on your computer you're trying to figure out which folder is yours and then you're doing the same stuff in my original instructions. (The way I figured out which account was mine was because I only had DBXV2 data on one of my accounts so I checked the 323470>remote files and found the one that had DBXV2 data in it, the other folder had only dbxv1 data).