I made peach chutney yesterday, hot ingredients into hot sterilized jars. Wiped the rims. After submerged in boiling water 20 minutes, and sitting placidly on counter all the jars popped but one. Today when checking the seals, depressing the center of lid, the one that had not popped on its own, popped. Now I am not sure if the seal of that jar is good.
Is it OK to store it, or should it be used and refrigerated immediately?