How to copy DIR in SAP DMS ?

Dear Experts,

We have large number of documents with following combination

1) Doc type: ABC
Doc part: 123

2) Doc Type: ABC
Doc part:000

Now the business requirement is to create a new doc type XYZ and move all the DIRs with combination of DocType: ABC & Doc Part:000 to this new Document type.

I did some research in terms of BAPI but could not find any direct hit to the solution.

Can you guys throw some thoughts on how this can be achieved.

Regards,

Deepak Kori