RMAN recovery through missing datafile (but all archivelogs)

Hi All,

We have a situation where we are trying to a point in time restore a PRD 
database to the test system.  Unfortunately the only RMAN full backup we have 
prior to the point in time does not include a datafile that was added to the 
PRD database.  For example

FULL RMAN backup------------(datafile added to DB)------------- Restore to this 
point-------- Most recent restore

The PRD database is in archivelog mode and we have all of the archivelogs, so I 
am guessing there should be a way to still restore this system to TST

Does the list have any insight on how best to do this?

Thanks

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