data loads/ flow testing

Question: I am a newbie to BW and have been asked to check whether all the data loads in a newly copied system are working , the system has been copied from another already LIVE system . However , the earlier R/3 data is now flowing into the new BW system ( as RFC dest settings have been changed ) .As of now ,we are not bothered about the validity/integrity of the data and neither with the data load schedules , just need to check whether all data flows/loads are working fine ..ie data from one point ( DS to PSA and then from PSA to next and so on ) ..can any of you please outline the steps we need to follow ..

all suggestions are welcome
thanks

Answer:
go to the workbench and create an infopackage for every active infosource and execute it...
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