One more comment
It seems to me that the mask-based renaming process works a little incorrectly.
Here's an example.
I have placed 4 waypoints on the map one by one, 01,02, 03, 04.
I have the "sort by date in reverse order" mode set in the Placemark explorer, it's comfortable for me because I can see the most recent waypoints at the top of the list.
Then I select all these 4 waypoints
I rename them by mask:
00%i
I get waypoints 001, 002, 003, 004.
BUT!
They do not correspond to the original waypoints.
Look at the most recent screenshot. The waypoints are lined up backwards on the map. The original waypoint 01 is now referred to as 004.
My wish was to rename the waypoints so that 01 turns into 001 accordingly.
I understand that if the sorting was Name (a-z) or something like that, there probably wouldn't be such a problem. But it doesn't always work that way. Or I'd have to rearrange the sorting method every time, and I don't forget about it. If I forget, it could be fraught with problems.
Imagine that I don't have 4 test waypoints on the screen, but 204 waypoints that I put one by one, following the route at a race, for example. I rename them and further confusion occurs.