Duplicate section issues

[Diegodiaz06]

I'm working on with forms but after of duplicate the same section several times, this option has been disabled, it's rare because I can create a new section and other sections can be duplicated it. What's it the explanation of this behavior? or exist a limit of duplications? 

[#2]

It could be related to how many questions exist in the section. We have a check for duplicates of a section including all questions, and if it exceeds the question limitation, the duplication action will be disabled.