Neither.
Look at the help for IMPORT NODE.

If the filespaces you are importing have identical names to the ones backed
up on the new server (and they probably will, since the clients haven't
changed), IMPORT will create new filespace names for the imported ones.  TSM
will NOT merge filespace data on import.

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Wanda Prather
The Johns Hopkins Applied Physics Lab
443-778-8769
wanda_prather AT jhuapl DOT edu

"Intelligence has much less practical application than you'd think" -
Scott Adams/Dilbert
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