FFS does not create folders in mirrored drive

[Raptor88]

Running FreeFileSync 9.9 on Win10 64 bit.
COMPARE = File time and size.
FILTER = (F7) (None).
SYNCHRONIZE = Mirror ->.

LEFT PANEL:
D:\Sketchup Files

RIGHT PANEL:
K:\BACKUPS\Sketchup Files

ACTUAL PATH IN DRIVE D:
D:\Sketchup Files
... Generator
....... Genturi
....... Instruction pics
....... Sketchup files for box
....... Box 2

FreeFileSync MIRRORED PATH IN DRIVE K:
K:\BACKUPS
... Sketchup Files
....... Generator
........... Genturi
........... Box 2

Why isn't FFS mirroring folders "Instruction pics" and "Sketchup files for box" from drive D: to drive K:?
IOW, why isn't FFS creating those two folders on drive K:?

[Raptor88]

I should add that drive D: is a hard drive. Drive K: is a USB3 flash memory stick inserted into a USB3 port on my Dell XPS8900 PC.

[Raptor88]

OK, I think I figured it out.
... 1. I originally had the batch job to mirror the folders from D:(HDD) to C:(HDD).
... 2. I changed the existing batch job to mirror from D:(HDD) to K:(USB3 flash stick).
This did not work properly.

I created a new batch job for item-2 and now it creates the missing folders.