P: Improve control over reverse-geocoded Location metadata

LR 4.1rc2 under Windows 7 x64The reverse-geocoding function of LR4 is a great feature and a potential time-saver, yet it can lead to some minor disasters.Specifically, there is currently no way to "stabilize" the location metadata that has been automatically filled by LR (displayed in gray italics). Editing any value by hand e.g. a misspelled City name, leads to all other fields (Country, State, Sublocation) being emptied - problematic when filters are effective on these fields, as the photo suddenly disappears and end up with partly missing location info.Possible remedies: when location info has been automatically filled by LR :- provide (only in such a case) a checkbox offering to "keep these values", so they can from then on be appear as 'normal' metadata, and be edited as such without some tricky behaviouror- make these auto-filled values separate from each other, allowing to edit one without discarding all the others. That would also allow the reverse-geocoding feature to work with any photo which has *some* location fields empty, not only those which have *all* (that is: Reverse-geocoding would always fill missing values, yet keeping any user-defined ones - let's assume photographers know better than Google where they have been shooting...)My preference would rather go to the first solution, as it appears to give more control without making the inner workings of reverse-geocoding too complex.