File Cannot Participate in Check In Operation

[SER4]

Please add a button for RETRY:

I spend some time writing out a Comment in the Check In - Multiple Files window, then hit OK, and turns out I forgot to close the file(s).  So I go close the file(s), but I can't hit RETRY because it does not exist, so I have to re-select the multiple files I had earlier and re-type my comment...annoying.

This has happened often enough that I'm bothering writing this Idea.