Error saving weekly schedule (The 'first' or 'last' option can't be saved in BP6.10)

[YALEICHEN]

Hi,
I just update from version 6.5.1 to 6.10, and found that the schedule which is weekly and starts on the first working day in calendar went error(now starts on everyday).

I reset it in the control room and 'Apply' . After refresh , the 'first' option goes to blank and the schedule becomes starts every working day in the Timetables.

Is there a bug in 6.10? Actually the same in 6.10.1.
Can anyone help to resolve this?

Thanks

[KotaSuto1]

Hi,
This problem has also occurred in my Environment(ver.6.10), but it hasn't been listed to the know issues.
So it might be better to inquire to the Customer Support.
As a workaround, you could create a new calendar which is included only first working days.
(It's too much hassle...)

[YALEICHEN]

@Kota Suto
Thanks a lot !
We have raised a ticket to the Support.​