Reusing an action

I have a character, her name is Carla. She was created about 2 years ago and appears in several of my videos.

In 4 of those videos, she is seated at a bar in a small tavern. Each new video was based on the Blender file from the previous video.

Well, Carla has evolved over time. It’s the same armature, I just fixed things like her dress and hair.

I tried appending an action from one of the old projects into a new project. It does appear in the Action editor and the Dope Sheet.

But it didn’t work, she just stands there.

What am I missing?

Thanks, Cal