So in theory the new Connection Reference looks great!
https://flow.microsoft.com/en-us/blog/move-flows-across-environments-without-resetting-connections/
However it seems to be influencing older solutions where I have not used the preview feature component at all:
Solution "Solution X" failed to import: It is invalid to create component connectionreference with the same export key value(s) as an existing component. Please change the key. The current value(s) are connectionreferencelogicalname: isp_sharedsharepointonline_ad2e0
It seems the solution has multiple reference to the same connector so when importing a connection reference popup appears:

and when importing it fails with the notification above.
- Why is a preview feature influencing my Solution that is not using the Connection Reference Component??
- Why can I not add one same connection in the target environment to multiple connection references in a solution??