I have a form with 25 Variables. That's why the form looks very lengthy, So I thought to add tabbed pages and distribute several groups of my form in other pages. But when I try to -
Configure Page > Add new Page
all my form components disappear from page 1. Even that's fine but when I try to create the same components with same variable name again it throws error "Variable already Exists" .
I don't know if this is a bug or a feature. I just thought of now having to create all from from scratch again.
I had a quick attempt to replicate the issue and was unable too. Do have have any screenshots of the issue, I would suggest logging a support case(firstname.lastname@example.org) to have them investigate further.
This looks like it may be a bug, as mentioned log a support case by emailing email@example.com. If you can provided an export of the Workflow you are using that will help the support team investigate(https://help.nintex.com/en-US/nwc/Content/Dashboard/Workflows.htm).