Hi
Just thought I'd update this in case anyone else is having the problem.
I started to plough through the source code to see if I could isolate the issue but then it occurred to me to try setting the number of fields displayed to 50 per page. My changes now get saved.
So for clarity: when editing a form and on the 'fields' tab there is a 'Show' dropdown box at the top. By default it is set to 'all fields'. I changed this to 50 per page and my edits were correctly saved to the form.
I suspect there is a length-of-string issue somewhere that. by reducing the number of fields displayed, is avoided.
Just thought I'd update this in case anyone else is having the problem.
I started to plough through the source code to see if I could isolate the issue but then it occurred to me to try setting the number of fields displayed to 50 per page. My changes now get saved.
So for clarity: when editing a form and on the 'fields' tab there is a 'Show' dropdown box at the top. By default it is set to 'all fields'. I changed this to 50 per page and my edits were correctly saved to the form.
I suspect there is a length-of-string issue somewhere that. by reducing the number of fields displayed, is avoided.