Currently i am in the process of exporting by tape to a new tsm server version 
6.3. Our old TSM server was run with a VTL with Deduplication. During the 
process of the migration i see a big increase in unique data being stored on 
the Dedup engine. I just wanted to know if during the export operations if the 
data is altered in some way which result in the dedupe engine seeing data that 
is already stored as new data?

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