Aseprite Importer ignores Aseprite file's Z-index when Import Mode is set to "Merge Frames"

1. Create and open a new project
2. Add 2D Aseprite Importer package
3. Import the attached “Aseprite“
4. Select the “IN-91955_u1wTU241225_boss.aseprite” in Project window
5. In Inspector, scroll down to Animation Preview
6. Select “boss-atack” animation
7. Play animation

Expected result: Cape and sword is sometimes rendered in front of the knight when attacking
Actual result: Cape and sword always stay behind the knight

Reproducible with: 1.1.7 (2022.3.55f1, 6000.0.33f1), 1.2.0 (6000.1.0a10)

Testing environment: Windows 10 Enterprise 21H2
Not reproducible on: No other environment tested

Note:

• Not reproducible when the Import Mode is set to "Individual Layers”