[REF] move gathering of location info to relevant function

[REF] move gathering of location info to relevant function

We have a loop that parses the migrationInfo to get just location fields which we loop through, but
migrationInfo is already available in the moveLocationInfo fn so we can just handle that param in there
& improve code readability (we do a little less array looping but it's pretty cheap & the code
readabiliity is a real issue here