How do I re-do the Sync of Groups from a Source to a Target domain due to incorrect OU mapping?

Hello,

For the first time, I 'Sync'ed' groups from a Source domain to a Target domain, however my OU mapping is incorrect.  I need to correct/adjust the OU mapping in the Target domain?  What steps are generally needed to remove the groups from the Target domain and 're Sync' the groups from the Source to the Target after I've corrected my OUMapping file?

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Thanks for your help! SdeDot

As a note, the process I used to 'Sync' the groups was a FI, then a FS on the Source Domain Management Agent, followed by a E-DI-DS on the Target Domain Management Agent.