This used to work perfectly but for some reason, it is not working as intended.
If I export JSON from Spine, and copy and paste it to the already existing JSON location folder, not all, but some events are removed in the process. I attached the two files so that you can see them.
I assure you that the update process worked well before the recent update. It updated the event keyframes without additional touches.
PS. I'm using Spine Mechanim and afaik these animation clips were auto-generated with that.