Omit key signature change indicators at end of line?

In an Anglican chant setting I have two chants in different keys. Musescore automatically adds the key signature of the second chant at the end of the first, as shown below, but this is undesirable in this context as the singer is cycling around the first chant several times before moving to the second.
I know the new key signature could be made invisible, but that seems to leave a hanging part of bar. Is there any way of preventing it adding this completely?

Thanks!