Slurs (phrases) Won't Advance to the Next Page Muse Score 4

Hello.
I want to phrase my instruments accordingly. I have Windows 10. I start with the desired note, hit "S" for slur, hit the right arrow to stretch it across the selected group of notes. It works. BUT... if the notes continue onto the next page, the slur stretches to the very edge of the first page and disappears into oblivion! LOL. Never reaches the second page no matter how long I press the right arrow.
How to do this the correct way?
Thank you so much.