The way to update Project's Finish Date at once.

Do you know the way to update Project's Finish Date at once?
My customer want to came to blank to Project's Finish Date because when Transaction Finish Date is entered, we can't import cost data that is outside of scope Expenditure Date.

We set like the following about Project Plan Type for our convenience. So this setting is not able to change.

Are there any FBDI's, etc. that can be used?

If it is possible, I would like to know the way that is not need development.

Please let me know,

Thanks,

Mayuko