We're in the process of upgrading from Info 7.5 to CE10 and have a similar problem. As DTaylor92 mentioned, it is a manual process.
The method I've used is to copy the SQL from the crystal query into a SQL Command.
In the DB Expert connect to the datasource as normal (eg using ODBC). The first option once the connection has been made is "Add command". Click on this and it will take you into an editor similar to SQL designer where you can paste the code. Create the necessary parameters and save.
Right click on the newly created Command and choose "Add to repository".
Remove the command from the report.
Select Database/"Set datasource location". Choose the newly create command from the repository in the bottom window, the old query in the top window and click "update".
Verify the database - if you don't, crystal seems to crash more often than not when saving the report.
Some date/time fields which may previously have been text get converted to date/time datatypes. Formulas containing functions like DTStoDateTime will need to be corrected.
The report will now be based on the repository SQL.
The process seems long-winded but is reasonably quick.
(<5 mins for a single report - obviously longer if the report contains sub-reports based on crystal queries).
