Wonderful tools, love it!
However, once you're done with the diffs, the "exit program" action (should also be triggered by keyboard interrupt exception) should destroy the containerlab topology.
As that doesn't happen, the Docker networks stay in place and the next attempt to run the tool fails. You have to do to /tmp directory, find the correct srlconv-* subdirectory, and execute containerlab destroy -t srlconv.clab.yml command.
Not a major nuisance, now that I know how to do it, I can do it manually, but it would be nice to have ;)
Thanks again! Ivan