|You only use it once s.|
I guess the important thing is that you keep all the email inbox/outbox/ contacts / agenda ?
Open outlook with the OST.
Create a new datafile in Outlook (which is a PST) and name it archive or temp.pst
Move all mail from Exchange folders to the PST folders.
And the pst fill up with all old data..... User Copy instead of moving. Just keep original data safe...