Hi Roby,
I have done this in the past when migrating from IXOS to EMC Centerra.
Basically what I did (with the help of some abap's I developped for this purpose) is to fetch the archived data from the archive server (in your case the SAP content server) so that it is placed back again in the filesystem of the SAP server. You can test that by clicking in SARA at the 'Store' button, where you see the option to retrieve allready stored archive files back to the so called exchange directory (the directory where the archive files existed before the store step has been executed).
Once all the archive files are retrieved from the content server and stored on teh file system of the SAP server (check the capacity of that filesystem), you simply change the content repository of that archive object to the new repository pointing to the Opentext archive server.
Once taht is done, you execute the store step in SARA again, and the file (previously retrieved) will be stored to the nex content repository on Opentext. You can automate this process if you want.
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Best regards, Nico Kuijper
Message was edited by: Jürgen L