The following error is returned in the XDC activity log during Export:
Error ==> Export :: Platform='BI 4.1', Document=Report1, ID=334035, Format=Excel ==> BI4 Error (Error Location: Export_XLS Report Part) (Remote Message: Not found. (RWS 00056))
An bug was introduced in BI 4.1 SP3+ that breaks XDCs using WebI reports that were migrated from BusinessObjects XI 3.1.
A workaround for this issue is available in later InfoBurst builds. Please update to resolve this issue.