Can't change product field type after I first set it. Greyed out / Disabled

I am using lots of pricing fields on a form. After spending the entire day setting it up, I realized I would need to use the option pricing field with it as the product field dropdown does not show the label when sending out the email notifications (lame)

Anyway, I have around 60 product pricing fields and when I go now to change the field type from drop-down to single it won't let me. All of the field type dropdowns are greyed out / disabled. THis is really annoying as I don't want to have to re-create them all as they all have different classes and behaviors so it will take another day...

Is this a bug or what is going on??? I am updated to the latest version...

Help!!

your export suggestion actually got me to try doing an export and then import again to see if that would fix it and it did. Really strange that exporting the same form and importing it again fixes the issue. For your reference only the newly imported file works, the old one still has the issue. If I can re-produce the error I will let you know...

I ran into this issue as well and came across this post — Fika's import/export process got me thinking, and it turns out this isn't really an error... You are unable to change the product field type after that field is recorded in a submission entry. If you go to the form's entries list and delete any entries that use the product field in question (and empty the trash), you will then be able to modify the product field type.