Does removing BB contacts fm KeyOne prevent sending text msgs to BBClassic?

My friend has a new BB KeyOne on Sprint. Suddenly I wasn't receiving texts from her but she could receive texts from me. I have a BB Classic on AT&T. She reloaded BlackBerry contacts app to her KeyOne and now I receive texts from her. (She previously had an old BB flip phone on Sprint; we were able to text fine.) Any one else experiencing this?

Seems like a weird coincidence. Can't think of anything that would cause that really.