That would depend on how you’re matching them. You need to do a query or something to see if it already exists. How do you know which is which?
Are you using a relationship field in the timesheet? Check to see if the relationship already exists. If yo give me more information about how you’re creating the new post I might be able to give you more information. But thinking about it now I’d say that adding a relationship field and updating it mighe be the easiest solution.
