Hi,
since AS2018 the databases are SQL, so we could easy manage to change entries. But there's a database which is not converted, the GTCMapping Table of the Advance folder. So this database is used for the mapping which is needed for the communication with other software (all Export/Import commands).
If you did a wrong entry (maybe you click a wrong material), it was easy to correct them in the old versions, but now there's no option for it.
We solved it by using the old Management Tools and load the GTCMapping 2018 in it, but not all users have the old version installed, so there should be an option to load mdb in the Management Tool. (Now it only convert the databases to MDF).
regards