Move Data to new Level

Team,

I have a Cell Library [with hundreds of Cells] I need to remap data from one Level to another.

Cells were imported from DWG block Library directory.

Some data is on Level named '0' which is the DGN Default, so I cannot simply rename the Level as it wont allow me to do so.

So I need to remap data inside each of the 2 hundred or so Cells... so I need to traverse Cells in the process... has anyone done this before? Thoughts?

 

This will also be the case for the thousands of DGN files which are to be migrated from DWG to DGN..

 

Cheers