I have a Rev00 and Rev01 version of a survey each containing different records but using the same schema. I want to merge the data of these two surveys into the Rev01 version but am not sure the best way to do it. I'm struggling to do it with the append tool in ArcPro (appending direct to the feature service) due to issues retaining the GlobalID so instead I have tried downloading the two datasets, merged them in Pro and then republished as a new feature service. I then republished my Rev01 survey but used the submission url parameters to point it to the new feature service. This all seems to have worked fine in that I can see the merged records in the Survey123 website, however, I can't see any of the attachments in the Survey123 website analysis or data tabs.
Is this expected behaviour? Is there a suggested workflow for merging two surveys whilst retaining all the functionality of the survey123 website?