Sorry, I forgot one think: exactly identical trick you may use in join section for IDs of objects:
join survey_1_scrap_1_station_ID_12345 at survey_1 survey_2_scrap_1_line_ID_2456:end m.s.
Sorry, I forgot one think: exactly identical trick you may use in join section for IDs of objects:
join survey_1_scrap_1_station_ID_12345 at survey_1 survey_2_scrap_1_line_ID_2456:end m.s.