There is a bug in saving properties. I created tenis template and badminton they were the same (same select box) . I edited badminton to add more select boxes than in tenis . Then i tried:

3 Edit object with tenis template and change to new created badminton template and save
4. Suddnely the template we created has only one property (the one from tenis template i think)
It works like editing the object and changing from one template to another saved the old property to new template badminton.

All new 3 select boxes disapeared from badminton template so i need to start again add properties to badminton template ....

Hello,

I am sorry for late response.
If I test it on Book it 2.0.5, it works well. No property disappear. I can change properties in bookable items many times and save them but I have not this problem.