Automatically move time from child to parent companies automatically on certain day of the month. We have clients which have multiple subsidiaries. They need one invoice for all their clients. Is there a method via deluge scripting or some other way to automatically change the time assigned from a child project to a project assigned to the parent on a specific day each month?

For example: 

Client A Parent/Master (Project Earth)

 Client Child-1 (Project Water)

 Client Child-2 (Project Air)

 Client Child-3 (Project Fire)

On the 15th all timesheets have to be submitted and pushed from Zoho People to Zoho Books. On the 16th any time associated with projects Water, Air or Fire are removed and reassigned to client Earth in Zoho Books.