mappings/VegCore-VegBIEN.csv: Moved "if subplot" _if statement around /location/parent_id and /location/sourceaccessioncode themselves, so that only one _if cond mapping for subplot is needed. Note that this is only possible because this _if statement uses _exists, allowing it to be fully evaluated by the XML template simplifying mechanism, which supports subtrees as arguments to _if.
mappings/VegCore-VegBIEN.csv: Moved "if subplot" _if statement around /location/parent_id and /location/sourceaccessioncode themselves, so that only one _if cond mapping for subplot is needed. Note that this is only possible because this _if statement uses _exists, allowing it to be fully evaluated by the XML template simplifying mechanism, which supports subtrees as arguments to _if.