With the idea of a big jump between versions, the main caveat is that you have to deal with any interesting errors that come up. They likely will be simple but solving some might take a fair amount of work. Watching the system console is critical to this to know what’s happening. Also the ability to manually edit the panel xml file to make some of the corrections might be needed. Or use it as a base and rebuild.
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How easy will depend on lots of things. Which command station? Which types of signals? Did it use how many of the different things? Are there things you would like to add?