Any copy form from Dev to Prod gotchas?

I see that there’s an import/export function to copy forms. I have modified a form that exists both in my production and development environment (same id). If I use the export/import form option, can I copy the Dev version and replace the Prod version or will import create a brand new ID? This very old link copy form to another site implies I can go to the form with the same object id and import into it.

Any gotchas I should be aware of?

Importing a form into a site will create a new form with a new form ID.