How to use VBscript to migrate CDM->PDM to LDM->PDM?

I have a lot of old CDM -> PDM model pairs that I need to convert to LDM -> PDM pairs.

I have the code to generate the CDM -> LDM.  Now I need to update the PDM TargetModel list so that the old reference to the CDM refers to the new LDM.  The problem is that I can't figure out how to Create the new LDM and Delete the original CDM.

Can anyone help?

Thanks.