thank you for your post and the email with the updated “Calendar Dates Importer 2.0.10”.
Up to now it seems that nearly all issues are solved.
Assigning categories to appointment is working again.
And if the all day box is checked the appointments will be imported correctly.
There is only one minor bug remaining. Importing an all day appointment works fine, but if you try to roll back this action by using the roll back function of the applet the appoint will not be removed. It will be converted to an appoint taking from midnight to 11 pm or so.