I faced this problem too. And I've found the tip, how to ease restoring of a EN database (.exb). You can use "local notebooks"
1. unable Internet
2. restore your EN .exb backup files to Datastores
3. In EN Desktop App, create local notebooks (that you need to restore) with an almost same title.
4. replace notes from backup notebooks to local notebooks
5 enable Internet
6. while syncing, It overwrite your restored notebooks and notes, but not local notebooks
7. replace notes from local notebooks to sync notebooks)
With that method, you can easier restore several notes or an entire database)))