Import/Export annotations - inking
The new import/export annotations feature is a game changer! I note a weird behaviour though: when I export to a file with inking (added by iOS Zotero) on the desktop to a PDF, the PDF has these inks. But when I re-inport it, I loose these ink annotations. Ink annotations done elsewhere (PDF Expert in this case) remain, but are not converted, but remain as fixed items.
Could you send an example PDF that we could try to re-import, to support@zotero.org with a link to this thread?
Although if you are modifying ink annotations that were exported from Zotero, they might become read-only annotations that won't be imported anymore. But they should never disappear.