Page template 123456789123456789 does not exist. Check your theme configuration!

[ctincristiagv]

I have two separate environments - APEX and DB. One was created as a clone of the other one. Recently, I started using SQLcl to export and import page changes from Dev to Prod. I used it for one deployment, but now it fails for the second deployment.

If I try to export a page and then import it, I see the page got updated in the Admin's list of pages, but if I try to access it, the page loader hangs indefinitely. If I try to access the page from a client session, then a message is logged:
"Page template ... does not exist. Check your theme configuration!"

The page template identifier is MINIMAL_NO_NAVIGATION, part of '42. Universal Theme'.

[ctincristiagv]

After further testing, it seems the SQLcl export puts some strange/random IDs for page/button templates. If I export the same page from the APEX Admin UI, the IDs are different (and can be crosschecked with, e.g., TEMPLATE_ID-s from the APEX_APPLICATION_TEMPLATES view).
If I import the page exported via UI, everything will be fine. If I import the one exported via SQLcl, it fails to render correctly due to the invalid template.