Ok both as it should be, but now I don't understand why it imports a lot of data sets. I rechecked the code for v1.1.0 - if no diff is shown it should not fetch anything and thus not import anything (that is also why the downloading is "so fast"). I just recently fixed an issue where partial fetches (when data sets are merged) were incorrectly executed, but this only applies to situations where the diff is shown, conflicts occur and those conflicts are solved by merging the state into something different than the remote state.
During this fix I implemented an additional check in openLCA, so if any merged data set is still fetched it won't be imported again, but this should be unrelated. We will release a new openLCA 1.10.1 version the next days, followed by a collaboration server release 1.2.x soon after. For now I'd say we wait if the issue remains in the new version, and I will do another test on this before the release.