Jake, Thanks for the info.
I want to merge systems as I have added & configured multiple components on the Stx2 RoHS ref design, but now want to target the Stx3 ref design.
I could either port the Stx2 sopc file; but the memory interfaces would need to be changed. The timing parameters would need to be identically matched (means a lot of GUI copying to ensure accuracy)
Alternatively, I could use the Stx3 sopc file; but importing & configuring each peripheral could be tedious.
As a side, I ended up creating two simple SOPC systems in two separate projects, edited the sopc files and found commonality. There are three sections: Elements, Parameter Names, and Connections. I copied each section from one to the other and found that it worked! Having said this, they were simple systems and I wasn't actually targetting hardware...
Cheers,
WW