openLCA does not do the identification of elements by name, but by ID number, and the ID numbers have changed, therefore the providers are not there when you import your system in the new version. This is independent from the suffix. This means that you need to establish the connections / providers again, manually or based on a script. If you want, contact me directly.
Thank you and best wishes,
Andreas
- and I will check the update manual, it refers to 3.8 to 3.9.1 I think