Issue Summary

Copying an older version of the page is not feasible if the destination parent page does not contain the corresponding version in its page history.

Steps to Reproduce

1) Create 1st page with three versions

2) Create a 2nd page with only 1 version

3) Now navigate to the 2nd version of the 1st page through the page history and try to copy it with the parent as the 2nd page

Expected Results

The page gets copied

Actual Results

The user will not able to move ahead from the copy page dialogue as Copy button is greyed out.

Workaround

Copy the content of the pages manually from the source version of the page to a new page