Hi Boleyd, once again we have not deleted anything from your install, or done anything else to you.
If an asset has disappeared from your routes, or from the content lists, then the first thing to do is check for it in Content Manager.
If it is not listed, then this indicates that either you have deleted that asset (or a DLC pack that contains that asset), or the files for that asset have become corrupt/damaged and been removed during database maintenance, or your drive is losing data. The number of times you have reported this, and accused us of deleting data from your computer, makes me think this is likely either data corruption or data loss, unless you have deleted a DLC pack recently.
If it is listed in Content Manager, then you will need to check the status of the asset. If it's shown as faulty, then you will need to right click on it, and then click on 'view errors and warnings' to see why it may be faulty. If it shows no errors, then right click on the asset again and go to 'open...' then click on 'preview asset'. Then see if it loads; if it does then it should re-appear in-game. If it doesn't, then check the errors/warnings again.
Note that we are aware of some users seeing assets being incorrectly shown as faulty, unfortunately we have not yet been able to reproduce this reliably in-house to resolve it. If someone does find a reliable way to reproduce this, then please this to our bug report form using this link:
https://n3vgames.typeform.com/to/xRdryu
Regards