RT-AC3200 JFFS not formatting on reboot

[Dfects]

As recommended, been trying to format the JFFS partition on my RT-AC3200 without much look. I SSH'd in and created a new file on the partition to check it was removed. Then have ticked the format JFFS on reboot option. Rebooted twice, ssh'd back in and the file is still there in the /JFFS directory?

On the first boot, the JJFS directory is empty. Second boot, its got the file back? Seems a bit odd.

Am I doing something wrong?

 

[Dfects]

I just did another initilize and that file is gone, so guessing that's wiped it anyway? Still, be interesting to know where I was going wrong.

 

[Dfects]

So i've done a bit more playing around. I've had it format once, but then it won't again. This is using 384.4_2

1. Initliased, enabled ssh
2. Wrote a file to /JFSS/scripts/test
3. Enabled custom scripts, set format JFFS at next boot
4. Rebooted
5. ssh'd in, /JFFS is empty
6. Rebooted
7. ssh'd in, /JFFS/scripts in there and empty so the test file is gone (success)
8. Wrote a file to /JFSS/scripts/test
9. set format JFFS at next boot
10. Rebooted
11. ssh'd in, /JFFS is empty
12. Rebooted
13. ssh'd in, /JFFS/scripts is there and so is the test file!? (failed)
14. Rebooted
15. ssh'd in, /JFFS is empty
16. Rebooted
17. ssh'd in, /JFFS/scripts is there and so is the test file!? (failed)
18. Initialized
19. ssh'd in and /JFFS/scripts is there but the test file is gone

Confused at this point, not sure why it worked the first time, not the second or third. I'm guessing Initialize formats this partition too? So either way I'm safe now if anyone did anything dodgy in there but still not sure whats going wrong.