using reference with inserting rows

My case is pretty simple. Let me explain that I really would like to know if there is a solution for this without VB.

I have a (see attached file) workbook with 2 sheets.
sheet 1: planning
sheet 2: actuals

In the planning the tasks are defined, with in the columns the planning hours.
in Sheet 2, there is a reference made to the defined tasks, where the actuals should be written.
Now, during the project, I want to insert a task between task 2 and task 3.
This messes up my references AND my actuals.
Is there any solution for this, or a smarter (preferably not in 1 sheet) to do this?

thanks.