Resource plan Start and End date is auto filled when creating from a project related list, which script is doing this?

[Chandler2]

I want to set the start date to current date whenever a new resource plan form is loaded. I have set it in the default value and it is working if I create a new resource plan from list view of table.

javascript: new GlideDateTime().getDate()

But when I create resource plan from project related list, it is taking the project planned start date value in the stars date. How to check, Which script is doing this?

[RaghavSh]

watch that field ans check which script is doing that.

Right-click on the field (form should be open with application navigator) and select watch.

[Chandler2]

Tried that. Many messages, 

It only shows UI policy which is setting the field mandatory and nothing about the value.

[RaghavSh]

Images is broken, please attach the image

[Chandler2]

Updated