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CMP with Collection

 
Greenhorn
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Hi

i have a CMP with a Collection of other CMPs (that is, i have a CMR between two CMPs)

Let's say that the CMP Invoice, has a Collection of Line CMPs

How can i add one Line the a given Invoice ?

I've been looking at the CMP and my only option is to get the entire collection, add the Line and then set the collection to the CMP, but i really don't think this is the way to go

Any ideas ?

Thank you
 
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