Overlord is limited by what After Effects can draw with shape layers. There are a bunch of elements that Ai uses that Ae does not have an equivalent. These will be skipped during transfer.

• Freeform gradients

• Gradient meshes

• Patterns

• Tapered strokes

If your design requires any of these elements, you will want to import these layer with the traditional Ai import method, or using Rasterize the selection to PNG.

Tapered strokes: Starting in CC2020, Ae now supports Tapered Strokes. Unfortunately, it is not possible to access this taper data in Ai until Adobe opens the API up for this element.