You realise, that if you turn off Cross Save and log into Steam, you will be at the point wherever Steam was at, prior to when you first started using the XB1 save data, correct? Your characters and progress do not transition from one platform to another. You are just choosing which save data to use when logged in to any platform. The save data is in the cloud, not on the platform. So, as an example, if you started using Cross Save with your XB1 as the "main" 6 months ago, and then stop using Cross Save today, your Steam account will go back to what it was 6 months ago. Your current progress and characters will only be on XB1 at that point. If you re-activate Cross Save ([i]after the required 90 day waiting period[/i]) with Steam as your "main", then again, Steam will be where is was prior to you starting Cross Save, and your XB1 characters will not be available on XB1 any longer - it will be using your Steam characters and progress. The only way to have separated characters and data on each platform is to not use Cross Save at all. When Cross Save is active, it doesn't matter what credentials you log in with since the same characters and progress are reflected on all platforms. If 3rd party systems are having an issue with this process, then you should be contacting their support teams since those products are not controlled by Bungie. Out of curiosity, what happens when you log out of DIM and then log back in with your Steam credentials? If it is functioning properly, you should see the same data as before since your XB-based save data is what is currently being used everywhere, even though you are on Steam

Just to clarify things a bit. When you play on PC with cross-save active, you are using your Xbox save data to do so. If you “switch your active account”, then you would no longer be playing your characters from your Xbox save data, and they would go dormant. You would then only have access to whatever characters you created on your PC account. Cross-save merely allows players to utilize a single set of save data across multiple platforms. It does not migrate/transfer any data from one platform to another permanently. The characters you created on Xbox, will always be tied to your Xbox account, and only your Xbox account. If you wish to continue playing those characters while on PC, you MUST keep cross-save active, with your Xbox account as the active save data. The reason third party websites refer to your data as being Xbox data, is because that is where that data originates from. It is not PC data, as you are simply accessing your Xbox save on your PC.