lost boosts

Unknown

Hi i was wondering if someone could shed some light on a problem i have. In The Sentry event i (accidentaly) purchased 5 +20% damage boost for 500 hp - ouch! but oh well fat fingers my fault etc etc. But now the event is over i seem to have lost them i have used 1 so i should have 4 remaining thats 400hp worth of boosts poofed out of my inventory. Will they return on the next chapter of dark reign story or have they gone forever and i need to contact customer suport or is there some disclaimer that i should have used them before then end of the event which i didnt see?
I know its been a few days since then event ended but ive been hoping they would magically turn up in the same way they disapeared.
Thanks.

Unknown

They should pop up during the next event that they can be used in. I know my heroic boost come and go with the events. So I usually save them up.