REST API moving data between apps combining dimensions

Summary:

We are trying to move data between two Applications in which the Source Application has Entity and Cost Center and the other Target Application only has Entity which combines the Entity and Cost Center together. We want to use Groovy Rest to move the data. We will also want to reverse the process when we send the data back. Is this possible?

Content (required):

We are trying to move data between two applications.

The Source Application has Entity (E_1000) and Cost Center (CC_12345). The Target Application has just the Entity Dimension that combines the two. (1000_12345) This would require us to remove the E_ from the Entity, remove the CC from the Cost Center, and then combine them.