Unable to select a very old revision from change log in the run custom build form.

I'm trying to run a custom build using an old build from a specific branch.  When I try to select the revision in the Changes tab, I cannot see the revision I want becaus it is too old (see image 1).  So, I use Change Log to rebuild from this old revision and then, I get the following problem :

The revision appears in the "Include changes" selector combobox, but does not appear as effective selected revision for the custom build. What I see is always the latest revision from the build configuration (see image 2). If I try to select another revision in the combobox then comeback to the revision I want, it is disappeared from the combobox.

What is the problem with my revision and how can I workaround this issue? 

Thx