Prevent deletion of file links on sync

[seanferns]

I don't think that's true. Create an item, link it elsewhere in the tree and now delete it. It goes into the Recycle Bin and is still linked to the other item. The two links can be seen in the Item Parents Pane as well. I hope this behaviour doesn't change in the future as the recycle bin can now be used as a sorting bin by deleting multiple items and then moving them to other locations.

[kinook]

Right, but if an item is in the Recycle Bin (and not logically linked elsewhere), syncing/importing will not logically link to an item with the same URL in the RB (since v3.5).