Hi,

There should be no difference on Nintex forms between SharePoint versions.
In fact you could export a form from an old version and import into the new.
Is the issue that you were using a classic form and are now using a responsive form?

Thank you for your reply! The difference is that I used to use buttons to select the different panels but now the buttons field only has four options, save, save and submit, save and continue or cancel. I cannot assign buttons to my various panels as before. Further, the panels that I created do not show up under the Item Properties under the Insert Reference section. 

@mmcaldwell Are you using a classic or a responsive form?

Are you using the same form type in 2019 as you were in the previous version?

What you can do is add Yes/No columns to the Nintex form and add a visibility rule to the panel that links to the Yes/No column. This hides the panel behind the Yes/No checkmark, so users can click the checkmark to see more. The rule would be something like

not(Checkmark)

and then link that to visibility of the panel. I think it says Hide in the rules tab. So if the checkmark is clicked, Checkmark will evaluate to Yes/True, so not(Checkmark) will evaluate to No/False, and then the rule will stop hiding the panel. You can put these checkmarks in between the sections.

Hi @mmcaldwell did these solve your question?

Yes, my mistake was that I needed to set the field up as a Choice field and then set the ‘Render as buttons’ to ‘Yes’. I was trying to use the Button Control. Thank you!

Happy you got it working!