Image numbers reset why?

Hey everyone,
I have just bought a new CF card and for some reason it has started from IMG_OOO1.

My camera is set to continues and when I first put my FUGiFILM CF card in my camera I formatted it, so shouldn't it number the files from the last image on my other cards since I set it to continues.

The first time I used the card the file names when like this IMG_0001, IMG_9983 so it was working but today it reset???

Anyone know what I should now do?

Since I took 55 images Should I add that to what my last card took then add that to it.

Then name a file of what it would of been and put it on the new CF Card.

My other Card was up-to 9994 so I guess it must of reached 10000 then reset.

I must of deleted the first few from 9995-10000.

So now will I have to rename my old files numbers as they will be the same.

If so I'll rename them to IMG01_0001 or does anyone have any other ideas?

My misstake it did reach 10,000 images because the folder is now 101 as before it was always 100.

Yeah. My naming convention is to include the folder number, then file number, then camera in the file name. As I use Downloader Pro, it's all automatic.