Replaces the playlist where? It only replaces the playlist in the targeted zone for me (not the other zone), or is that what you mean? When I right-click "add to playing now" things always seem to get routed appropriately.
That's what I mean. If I click play on an item it gets routed to the correct Zone, but doing so replaces everything in that zone.
The way I use the Video Zone is that I often have several hours of content queued up - which is not simply five episodes from a single series, for example - it may be different files from different sections of the library.
So I switch to the tab and hit play to resume from where I was. Only it won't play due to this conflict, because ZoneSwitch is not being activated.
[…]if you're trying to start playback from within playing now, it won't work.
This is the problem.
The way I typically work is that I use two split views.
The left split is all my zones, and the right split is all my library views.
I normally have music playing in Split 1 Tab 1 (Audio) while queuing up videos from say Split 2, Tabs 3-5.
Then I switch to Split 1 Tab 2 (Video) and hit play once that is done.
That way I can spend say 5 minutes building up a playlist of videos while continuing to listen to music.
The issue is that once that is done, I can't just hit play in the Video Zone to play.
Or I might have been listening to music all day, queuing up music from Split 2 Tabs 6-9, then switch over to the video playlist I created earlier and just hit play on it.
It may even be that I have music paused in the Audio Zone, so it's not actually obvious that it is "playing" anything until there is a conflict preventing the video from playing.