One use of 4.9 Valentina ADK have told us that many his users have databases on DVD in 4,9 format. So if he will try change his app to Valentina 5.0, then how users will be able work with this read-only databases?
To resolve this, we have improve Valentina engine. Now it will make attempt to work with read-only databases in older format as is, without conversion.
Important to note, that this will work fine for 5.x engine opening 4.x databases.