When using the Artboard Export (Control Alt E), I noticed that importing those files (in my case, JPEGs) into After Effects and Premiere results in all the files being the last output image of the batch. It doesn't matter if they are imported one at a time or in a group, through Media Browsers, Drag and Drop, or an Import Dialogue box. The files visibly appear correct on the computer when previewed.

This is experienced when importing into Adobe After Effects and Adobe Premiere (2019 and 2020). This behavior is not present in Photoshop or even Adobe Acrobat upon import.

I have also down-saved to a Legacy .ai and performed the same export. Those files imported properly into all the above DV Apps as expected.

You can view this here. The files all have the same thumbnail (and pull into the timelines/comp viewers as the same image) but have different file paths and are different on the OS.

https://www.dropbox.com/s/atdp67zt3p3m8w9/Importer.mp4?dl=0

System Information:
Windows 10 x1903
i9 9900K
64GB ram