Can't change dates for task - Grey dates

[maddiemoore111]

Hi, we have a project from Fusion that has grey task dates (screenshot attached). I have never seen this before, and when attempting to change the date, it automatically reverts back. Any tips?

[Eric_D_Miller]

What is your Task Constraint on the tasks?

[maddiemoore111]

Hi, here are the task constraints. 

Final Score Social Posts #57 ASAP
Frost ASAP
Frost ASAP
Frost ASAP
Final Score Social Posts #3 MFO (2025-10-26)
Frost ASAP
Final Score Social Posts #4 MFO (2025-10-27)
Frost ASAP
Final Score Social Posts #5 MFO (2025-10-30)
Frost ASAP
Final Score Social Posts #6 MFO (2025-11-02)
Frost ASAP
Final Score Social Posts #8 ASAP
Frost ASAP
Final Score Social Posts #9 ASAP
Frost ASAP
Final Score Social Posts #10 ASAP
Frost ASAP
Final Score Social Posts #11 ASAP
Frost ASAP

[Srinija_N]

Are you trying to change both the Start and Due on dates or only one?

If you are trying one of the dates, you might have to check the "schedule mode".

when the schedule mode is "Start Date" you will only be able to change the Start on date of the project, when its "Completion Date" you will only be able to change the Due on date.

If its not this case, Please check other project details or share a screenshot to understand further.

Please mark this reply as "Correct reply" if this helped you and to help others. TIA!