You aroused my curiosity with this and I've spent a while tinkering with it. I think I have identified your new version of the 'merging', but first, a couple of observations.
1) The manual page you were originally looking at is from CrazyTalk Animator v1.2
. It's not surprising things have changed a bit in the past seven years!
2) Your example cited the need for Adobe Photoshop (to be able to work with the PSD file), but there are other non-subscription based apps which can also fill this role. Affinity Photo is the example I have, but there are others: there's a list of compatible tools towards the bottom of this page
It looks as if what you now want to do is to create a Composite Prop
. If I understand this right, here's the explanation… Ordinary props contain a single sprite, but each sprite can contain multiple versions (and these allow you to do simple sprite-switching animation - you only ever see a single version at any one time on the stage).
However, composite props contain multiple sprites (each of which can contain multiple versions, as above). In your video, the first sprite would be your wall and the second sprite would be your door - both on display at the same time.
To create a composite prop (the old merging), each graphic element has to be saved as its own prop in the content manager to begin with - I don't think this can be done on the fly by dragging PNG files (or whatever) straight off the desktop. Place a single prop on your stage. Select it and open it in Composer mode. Click in the background to deselect your first prop. Now, from the Content Manager, drag in your second prop. Arrange it beside/under/over/etc the first prop. Repeat for any other elements you want to add to the composite prop. Return to the stage and you have now got your composite prop.
These steps replace steps 1 to 5 in your list. Now you can begin your animation, as you've already worked out and illustrated in your video.
Hope this helps?
Cartoon Animator 4 Pipeline (always the current production version, unless otherwise stated)
macOS Mojave (10.14.6)
Signature data last updated 2020-01-02