onChange Client script ignores empty field

Hey guys,

I'm working on a client script that clearValue()'s fields below a given field on a form. I'm using an onChange script but have an edge case thats giving me some unexpected behavior. The targeted field is a reference field, but if the user manually clear's the field the onChange script does not run. If the field is then given value either through a reference or user input the onChange script runs as expected. The primary issue here is that a user can accidentally clear the field, then put the original value of the field back but sub fields get cleared even though technically the field "hasn't" changed.

Is there any way to check if the reference field has been cleared by the user?