Missing Option: Insert Morphing Key Drawing

Hi there!

Am I blind? I have set up a morphing sequence with a source drawing and
a second one. Now I want to insert a morphing keyframe in between as described on page 288 of the Animate_Help_System.pdf.

I can only convert the whole morphing sequence to drawings, but that isn’t the option described.

I am using Animate Version 7.6.0 (4830).