Steps to reproduce:
1) create a new booking
a) identify order parameters
b) add to cart
c) check out
d) receive email confirmation
2) confirm order appears in orders view (?q=cart/checkout#overlay=%3Fq%3Dadmin%252Fstore%252Forders%252Fview)
3) confirm the availability calendar updated and shows dates as unavailable
4) go back to the orders view, cancel the order
a) select "canceled" from "order status" drop down in order detail screen
b) click "Update"
5) go back to orders view and confirm the order is not listed there
6) go to the availability calendar...
dates from canceled order are now available
dates still marked as unavailable.
I've just started working with the uc hotel booking module, so most of the configurations are the default.
I had to set the "Auto available interval" to zero because I kept getting errors when creating content of type "Hotel Room Type". Changing this value to zero "solved" (got me past) that issue.
Also, "Default Number Available" for the content type that I'm testing is set to 1.