In short:
I cloned the original SATA M.2 SSD to a new NVMe M.2 SSD and everything (even Alt+F10) works well but I'd like to know why is now the recovery partition looking differently in Disk Manager (it doesn't have a description anymore).
More details:
I have Acer Predator Helios 300 (PH317-51) with GeForce 1050 Ti, 128 GB SATA M.2 SSD and 1 TB mechanical disk. I've now bought 1000 GB WD SN550 NVMe disk and used disk cloning tools (I tried a few of them) to backup the whole SSD disk into the file on a secondary hard disk and after installing the new SSD instead of an old one I restored the image.
Although all 3 partitions from the original SSD (EFI, c: and recovery partition) were restored correctly and everything works well - the recovery partition is now not anymore listed as "Recovery partition" (but it is not unallocated space either).
Here are the screenshots of the Disk Manager before and after cloning the disk. As can be seen I still didn't expand the c: partition to its maximum size, that is the situation immediately after restoring the image.
PS
I am almost sure this question will not have an answer.

