Location Module - Two Locations per User - How to distinguish?

I'm using the Location Module to store one or two locations for each user - one for current location (required), and another for their home place (optional).

I've allowed two locations to be shown on the profile edit (and registration) pages. However, the Location Module doesn't keep them in the same order that they were entered. I can't figure out its logic for this either - it's not by location id (lid) - coz 14 was followed by 13 - and not alphabetical coz "A.." came after "H..".

Also, if someone can help me sort out *this* issue, there's another one... How will I be able to get the location(s) I need from the database. For example, if I need current location for a user, how do I know which of the two records in the location_instance table is the one I need (for that user)?