If i select multiple sheets in the library and then try and export, they just end up in one large file. I have about 50 sheets that I want to get from Ulysses to iCloud/IA Writer, but only have access to Ulysses in iOS and not on Mac.
Selecting multiple sheets joins them at export, as you’ve noticed; unless there’s a trick I missed individual page export must be done individually, which you can do via Quick Export. Help page is here.