In the FBI app I can see all tickets regarding the stuff I've downloaded from the eshop before modding my console (promo codes, free demos, purchased stuff, etc), despite of that, information about those titles aren't contained in title.db nor import.db, I need to update those files (reason explained above).
Or... I'll probably find another way to recover my data. Your information was very useful
You can cheat and reinstall the cias: at least DevMenu will say "title already installed" if you're only missing the metadata and skip the actual ncch extraction...
(If we could understand the format of those files, we could install any cia with hardmod or godmode9 only + PC software, or do a real full OS reinstallation!)
(before people get too excited, I said install, not run)