Deleting files from Simplenote

Hi

I’m playing with the sync to Simple Note Feature. I’ve managed to sync several files to Simple Note. But I’m confused about to things:
a) the sync seems to mess with my file structure. The selected files (say all subchapters of one chapters and some other files) appear in a random order. Is this normal?
b) although I’ve ticked the box (delete files not selected for syncing from Simple Note), the old files stay in there. Why? And: Can I delete them in Simple Note without endangering my project in Scrivener?

With thanks

Hm… does nobody have an idea? I really would like to free up space in my Simple Note but are scared of deleting the files. Help :open_mouth: