Key Signature System Breaks Engraving

Crobi

I am writing a scale sheet for my students. At the end of every scale, I do a system break for the new key. Unfortunately, there is a "warning" key signature at the end of the previous scale.  That is, it displays the new key signature at the end of the previous scale's line.

This is not helpful, and detracts from the cleanliness of the engraving. How can I fix it?

IMR