Vector layer actualisation in AE

Hey !

I have a problem of communication between After Effects and Illustrator.

I'm working on a project with a lot of animated vector layers, coming from two separated Ai files. My aim is to produce a serie of short videos with the exact same animation, but with different designs which will be changed directly in Illustrator.

So, animation in AE but design in Ai, and when I save the Ai file it update the layers in AE and I can export the result.

I did that and it worked very well for the first 3/4 designs, and after that it suddently broke.

- First, AE stopped updating the version of the layers. But when I double-clicked on a layer in the project panel, it show me the updated version ... and still won't update it in the different comp (nothing has been renamed, vectorized or pixelized)

- On the comp, when I right click the layer and select "open > modify the original", it opens me the Ai file, with my latest design. So the link is still there.

- Now, and without having touched anything, the layers version won't even update when I double-click them on the project panel. It shows me the previous version, and if I right click and go to "replace > file > select my Ai file > select the layer", it still won't update

So it's basically like AE is stuck with a previous version of my Ai file.

> I did try to rasterize the layers in the comps, everything got actualized, but when I updated and saved the Ai design, it still didn't make it to my AE project.

> From time to time, when I turn of AE, make a completely different design in Aim, save it and reopen AE, it will update ... and get stuck again ^^

So, I'm really lost on that. I've got a ton of layers and a ton of versions to export, so I really need this feature to work.

Does anybody has ever experienced this problem ?

I should specify that my layers are a bit complex (it's an illustration), and I'm working on a M1 Mac