The import tabs are not always useful and tend to accumulate if you import a lot of single certificate e.g. via "Search on server". Especially since version VSD 3.3.0.
This can be annoying and we got a customer feedback on this.
Edit 2025-05-22:
We decided to remove the import tabs. Instead a button will be provided in the import result window to optionally open a separate import window. This will show the same as an import tab currently does.