There are three ways by which starting locations are matched with Sense holes: strict timestamp match, time order match and name match.
Strict timestamp match looks at the imported data in order, and matches each position’s timestamp with the Sense hole which has timestamp closest to it, but not further than 5 minutes, and has no prior GPS position data. If there are no positionless Sense holes with timestamps within 5 minutes of the imported position, the position is discarded.
All the Sense holes on the Plan must have position data attached to them with the timestamp match, or the import fails. There can, however, be more GPS positions in the imported file than there are Sense holes on the Plan, in which case some of the imported positions just won’t match to any hole.
Time order match puts the timestamps of both the Sense holes on the Plan and the positions in the imported file in order. Then they are matched by index (first with first, second with second, …). Time order matching requires that there are exactly the same number of holes on the Plan and positions in the file.
Name match matches the positions to holes by name. Name match doesn’t require there to be GPS data for all the holes.