Selecting a previous version which is not listed but installed from DW is not intuitive

Scenario:

I am upgrading from version 4.5.3 to 5.2.2.
I upgrade my Main wiki, and choose the option "Upgrade current wiki only"
I go to my subwikis and want to upgrade them

The DW asks me if this is an upgrade, but I can't find my version listed there. Here are 2 issues:

1) In order to be able to specify my version, I have to select one of the existing options, click the pencil icon and the put the correct version in the corresponding field.
2) Also, that list should be updated with the newer versions of XWiki