Header and Line Level Location Fields on Transactions

As part of our SuiteCommerce Advanced and Collect From Store implementation, we now have the Location field showing at line level on Sales Orders.

It appears that NetSuite does not differentiate between these fields correctly in Saved Searches?

On other fields (such as Memo) you get 'Memo' (line level) and 'Memo (main)' (transaction level)

Location only appears once in the Search list (there is 'Location (no hierarchy)' but this gives the same as Location as we don't have any sub-locations configured).

If I create a Sales Order Transaction Search with Main Line set to True, then 'Location' returns the transaction level Location field from the Sales order. If the Search is set to Main Line = False then Location returns the line level location field per Item line.