I have known this problem for a long time but now finally write about it. When I want to search Mt 7-5 or Heb 6-12 or whatever other custom range -- something that happens very frequently -- I don't want every range to be saved. There are some common ranges I actually do want saved. Saving everything nullifies their usefulness because the list grows long and cluttered.
My work around has been to go back and delete the unwanted ranges manually every time, but it would be so much better if we had the choice between "enter" and "save for later" in the first place.
I hope the present setup is not intentional (a bug?) and if it is, I would suggest changing it. Or perhaps I can be helped to understand why it is better this way.
Note: we already have the ability to pull up past searches using the drop down arrow by the search field, so if I wanted to remember what search I did I would use that.