yEd does a Great Job of importing Excel Information. I have developed a sophisticated way of Processing the Data so that the Imported Results are Nearly Perfect.
The Groups and Nested Groups all work well. The organization Inside the Group Nodes is Generally fine.
Once I do an Import that I like, I'd like to select the coordinates for each Import Group and then redo the Import.
For instance, I have 8 first level groups (# 1 - 8). They all import just fine. The problem is that yEd puts them in the wrong numeric Order.
When I move the Groups, all the Edges are messed-up. there are a ton of them.
So far, I just live with the Random Order.
Professionally, it is Very Embarrassing L:(