SAP provides a way to migrate your Crystal 2008/2011 Reports to Crystal Reports for Enterprise BI4 (SP04)
First, launch Crystal Reports for Enterprise
Open the report that was created in Crystal 2008/2011
You receive a screen like Figure 1
You may want to select I want to back up your report before migrating. It will create a copy.
Figure 2 shows the data source (in this case it is an ECC InfoSet) on the left
For Figure 3 I select the ERP Universe (already created in the Information Design Tool) and then I begin mapping the fields.
On the left of Figure 3 is the ECC Infoset and on the right is the Universe against the ECC InfoSet.
Figure 4 is the final sample report, now converted to Crystal Reports for Enterprise
Note there is no mass migration tool, you need to do this one report at a time.