HISTORY has gone EMPTY Rated 3 out of 5 stars

i installed this addon,
i opened it, loaded "places.sqlite" database,
and deleted only some rows in table "moz_items_annos",
after that when i checked my history list , there is nothing
and all was empty.
where was my browsing history gone.
please reply me, its very urgent


This review is for a previous version of the add-on (0.7.7).