Not an answer to your question, and possibly not applicable to your app, but if you were using hash routing, you could easily build a route out of a string. HashRouting: Routing, navigation with URL Hash
Hash routing isn’t for every app, but I’ve found it simplifies the sort of form to form navigation you’re trying to do quite a bit.
Alternatively, if you can’t work out the import from where it’s at, you can pull your import code out of your repeating panel and back into your form, and have the repeating panel trigger an event that will let the form itself handle things: Dynamically Adding Text To End Of A Text Box Or Text Area - #8 by jshaffstall