Have you also lost the automotive drop down menu? If so you may have installed the wrong version - make sure you get the automotive version from https://www.picoauto.com/downloads
Thank you for your post and I believe I understand what you are referring too.
The customer details box was removed to fall in line with the 2018 GDPR ruling about retaining and sharing customers information. As we can share PSDATA files with anyone in the world it would fall outside of these rules and therefore we had to remove the box.
Also, please bear in mind that if opening a file with a newer version of PicoScope and then re-saving the file, these details will be permanently removed from the file.
The vehicle details still remains the same and of course there is the notes section where you can add as much information regarding your connection to the vehicle as you like.
I hope this helps in some way and explains why the customer details box is no longer present.