Add new dimension to existing model (without deleting existing data)

Hi:

    We are in 10.1 Netweaver release on 7.4. We are trying to add new BPC dimension to an existing model with data. System returns tihis message " Modify model XXX failed. Model XXX has

transaction data". Looking for OSS notes we found this one, 2149043 - "Modify model XXX failed. Model XXX has transaction data".  In impact side the note says ....

Impact: Customers need to copy data from the first model to the second model and do again their Securities for this new model. With BPC 7.5 or

BPC 10 cusomters had the possibility to add a new dimension into an existing model without deleting data. BPC reposted data on the first

member of this new dimension.

Someone knows how do that?

Thnaks in advance,

Abel López