The glissando ignores the key change:
!NoteWorthyComposerClip(2.751,Single)
|Clef|Type:Treble
|Key|Signature:C|Tonic:C
|TimeSig|Signature:4/4
|Tempo|Tempo:168|Pos:10|Visibility:Never
|Chord|Dur:4th|Pos:-3,-1,2,3
|Chord|Dur:4th|Pos:-8,-3,-1,#1,3
|Chord|Dur:8th|Pos:n-6,-3,-1,#1,3|Opts:Stem=Up,Beam=First
|Chord|Dur:8th|Pos:#-6,-3,-1,1,3|Opts:Stem=Up,Beam=End
|Rest|Dur:8th
|Chord|Dur:8th|Pos:-5^,-3^,-1^,1^,3^
|Bar
|Chord|Dur:Half|Pos:-5,-3,-1,1,3|Opts:Stem=Up,Muted
|User|Glissando.ms|Pos:1|Playback:WhiteKeys|EndOffsetY:-10|Pen:wavy
|Clef|Type:Bass|Visibility:Never
|Note|Dur:8th,Grace|Pos:-2|Opts:Stem=Up,Muted|Visibility:Never
|Rest|Dur:Half
|Clef|Type:Treble|Visibility:Never
|Bar
!NoteWorthyComposerClip-End
Of course I can olways write this way, cluttering up a bit the score in edit mode:
!NoteWorthyComposerClip(2.751,Single)
|Clef|Type:Treble
|Key|Signature:C|Tonic:C
|TimeSig|Signature:4/4
|Tempo|Tempo:168|Pos:10|Visibility:Never
|Chord|Dur:4th|Pos:-3,-1,2,3
|Chord|Dur:4th|Pos:-8,-3,-1,#1,3
|Chord|Dur:8th|Pos:n-6,-3,-1,#1,3|Opts:Stem=Up,Beam=First
|Chord|Dur:8th|Pos:#-6,-3,-1,1,3|Opts:Stem=Up,Beam=End
|Rest|Dur:8th
|Chord|Dur:8th|Pos:-5^,-3^,-1^,1^,3^
|Bar
|Chord|Dur:Half|Pos:-5,-3,-1,1,3|Opts:Stem=Up,Muted
|User|Glissando.ms|Pos:1|Playback:WhiteKeys|Pen:wavy|EndOffsetY:8
|Note|Dur:8th,Grace|Pos:-21|Opts:Stem=Up,Muted|Visibility:Never
|Rest|Dur:Half
|Bar
!NoteWorthyComposerClip-End
I think it's worth to know