Resolved move data from CSVI Pro 5.19 to RO CSVI 8.22.1?

Hello,
There is no direct way to move template from that very old version of CSVI Pro. Honestly we have never tested this nor we had any other user coming with this requirement. The way I see it is by doing step by step upgrade of RO CSVI. You can update to RO CSVI 6 version from CSVI Pro 5.19 and then RO CSVI 7 and then finally RO CSVI 8 version. That should work. Also after every upgrade go to RO CSVI About page and click on Verify Database button. That would fix any database conflicts with Ro CSVI tables. Again there is no support for old RO CSVI versions so I am not sure from which version we have Verify Database button. You can click this button from the version it is available. Try and see if this helps.

Maybe I can make a transfer using direct queries between databases?
Something like INSERT INTO database2.table_name SELECT * FROM database1.table_name;
Or is the data stored not only in the database, but also in files?

Hello,

Maybe I can make a transfer using direct queries between databases?
Something like INSERT INTO database2.table_name SELECT * FROM database1.table_name;

There are changes in database tables from old version to new version of RO CSVI. I do not have any record of the changes from old database tables. All I know is that there are four tables #__csvi_templates, #__csvi_templatefields, #__csvi_templatefields_rules and #__csvi_rules related to templates along with template fields and rules. All the primary and foreign keys of these tables should also be moved so template, template fields and rules stay connected. You can try moving data from these tables. I would still recommend step by step upgrade as all these tables are updated as per RO CSVI version and there is no manual work involved.

Or is the data stored not only in the database, but also in files?

Data is stored in database and not in files.