Export - Import Collections

Hi there. Has anyone experience with exporting a collection, making edits or additions, and importing the file where duplicates are not created?

I did not want to work with individual issues when there are mass edits to make.

When I do it now, it creates new duplicate entries and those entries are not recognized compared to individual additions from earlier, like with cover images.

It could be done through using unique identifiers to sync, but any insight would be appreciated.

No, it’s not intended to be able to export and then import changes to existing entries. And if you’d always clear your database and then import whatever you exported, you might run into other problems and definitely lose all covers you added yourself.

Let’s take a step by: What are you mass editing?
CLZ Comics Web has an “edit multiple” feature, could you not use that for your changes?