I tried copying a group with more groups inside of it, ie regular group, checkbox group, or radio button group nested inside of a regular group. I am unable to copy and paste the “outer” group with all of the “inner” objects. I’m not seeing any error messages, it just won’t do it. Do you get this same behavior?
To work around it, I was able to copy and paste the inner objects and then regroup them.
Copy / pasting groups, especially where you have groups in groups does demand a lot of ‘resource’ and it can take a long time. There are updates for this coming in the next update release that will help improve this, but your ‘workaround’ is still a good practice to consider. you could also ‘ungroup’ the group to copy/paste and then re group them as well which will reduce the workload