Earlier versions of Crystal reports (.rpt files) retain their functionality when opened and saved in Rational Application Developer. However, the following limitations apply:
Maps
Map objects are not supported in this version of Crystal Reports. Map objects will appear blank in the report.
OLAP Grids
OLAP grid objects are not supported in this version of Crystal Reports. Reports designed with OLAP grids will not open.
Dictionaries, InfoViews and QRY files
Reports based off of Crystal Dictionaries, InfoViews, and QRY files are not supported in this version of Crystal Reports and will not open.
Crystal reports from versions 9 and earlier will be upgraded to the latest version when you save the file.
Note Once a report is saved in Crystal Reports, this report cannot be opened in previous versions of Crystal Reports. Keep a copy of the report if you wish to open it in a previous version.
Working with Reports using Unsupported Drivers | Changing the Data Source Location