Data created using the Survey 123 Connect for ArcGIS app with multiple groups pointing to one repeat populates the data in other related tables while submitting a survey.
Not reproducible with Survey 123 Connect for ArcGIS 2.6.9 or Survey 123 Connect for ArcGIS beta version 2.7.98. Based on the survey example provided (xlsx form) there is one group within each repeat. Each repeat is relevant based on answer to initial select one question (A-E). The synopsis of this issue is worded incorrectly, stating that multiple groups pointing to one repeat. However there is only one group per repeat in xlsx form example and that repeat or group combination is working as expected. When data is collected within the group with the repeat that is relevant based on select one, the data was submitted to the correct related table in feature service based on relevant question and the other related tables were empty when checking the feature service in ArcGIS Online.