I'm no expert in Sketchup Pro 2024 but I did spend a few hours trying to sort this out. I don't know now it used to work and apparently it worked much better. But I was finally able to export a camera from SKP that had been Photo Matched. However, it was not frustration free.
First, I had to use Advanced Camera Tools. But, they are not visible by default. I had to go to the Extensions Warehouse and enable it. Once I had it, I placed a camera in the scene and did a Photo Match. I wanted to compare and match a scene I had in Max to see if the SKP camera would line up and be positioned the same as the Max camera.
Bringing things in was a challenge. Even as both programs' units were CM, things came in the wrong size and misorineted. Once I spent time adjusting, I was able to get a fairly good alignment. But, this destroys precision. I should be able to just import/export back and forth and have things instantly drop into place. I expect if I spent time developing a proper workflow, I could achieve this, but, on initial efforts it was not a friendly process.
So, to go back to the original post, "New SKP Importer won't import 'Match Photo' scenes as cameras", you can. But it's not fun.
Here's what I suggest @ROM_RRR. Write up a detailed overview of how it used to work and then one of how it works (or fails to work) now. Send that off to support using the links Hagen provides in the main Max Forum. I think there is a lot of room for improvement and if it used to work seamlessly and well, it certainly does not do that now. As I often mention in the forums, and did above, this is a user-to-user forum and the best way to get the Devs attention is not here, it is to report it as a bug or just report it to support in hopes it gets put on the Defects list to be looked at.
Rob Holmes
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3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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