Input field not saving to DB

I recently came across a small bug/glitz where all the inputs fields in my form were being saved to a table, with the exception of a single field. This was especially strange since this same form also sent an email and the missing field (from db table) was being populated in the email correctly.

I attempted removing this field and table and recreating a few times with no luck.

Solution
Luckily the solution was rather simple, after I found it. In the 'Forms Manager', hit the 'Delete Cache' button. Reload the form page and retry. The missing field is now saved correctly. Hopefully this can save someone else a bit of time and frustration.

Note
My guess is this could potentially happen with more than a single input, but should be correctable in the same manner.