Canon EOS RP Mirrorless Camera - Manual (Page 364)

364
File Numbering Methods
Continuous
When you wish to continue the file numbering sequence even after the
card is replaced or a new folder is created.
Even after you replace the card or create a new folder, the file numbering
continues in sequence up to 9999. This is useful when you want to save
images numbered anywhere between 0001 to 9999 on multiple cards or in
multiple folders into one folder on a computer.
If the replacement card or existing folder already contains images recorded
previously, the file numbering of the new images may continue from the file
numbering of the existing images on the card or in the folder. If you want
to use continuous file numbering, it is recommended that you use a newly-
formatted card each time.
0051 0052
(1)
File numbering after replacing the card
100
0051
101
0052
File numbering after creating a folder
Card 2 Card 1 Card 1
(1) Next sequential file number