Or can this only be done by leveraging multiple surveys? I need to collect data that are best stored in a related table.
Hi Gary,
The workflow you describe, "merging" multiple surveys into a single survey - and still keeping them as separate feature layers is not supported. This is an interesting workflow though. I suggest you propose an enhancement request on the ArcGIS Ideas site, so we can gauge interest from other users in the community.
Hope this helps,