[rules-users] Rules Deployment Issue

Hi, We have a rule deployment directory where we can deploy the rules.Currently we have written a new rule and deploying to the same to the deployment directory. what i observed is when i deploy the rule for the first time and passing the corresponding data to fire the rule, the rule is not getting fired.If copy the same file to some other temporary directory and removing the same from current directory.Finally i am copying the same file from the temporary directory(to which i copied before removing the file) to our deployment directory then the rule is getting fired as expected . Could you please provide any pointers to resolve the issue. we are uing 5.1.1 version of drools. Regards, Srinivas