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I googled for 30 min & can't find this info.

Where are the FireFox Filter hit statistics stored???
I want to save the info but I don't know where it is

C:\Users\YourUserName\AppData\Roaming\Mozilla\Firefox\Profiles\4e6bp7b4.dev-edition-default\adblockplus

You have to get patterns.ini file (where are all the filters - from the lists but also your custom filters), see above where's (in your firefox profile), replacing with your profile and user name

for example (see hitCount):
text=@@||toptipstricks.com^$generichide
hitCount=1
lastHit=1486230086175

Cool thanks man