Your driver license application is valid for 12 months from the application date. If your application will expire before you have held your provisional instruction permit for six months, you must return to DMV and start a new application. You will need to pay the application fee and fulfill all application requirements. Take your instruction permit with you to DMV. You will be credited for the time you have held your instruction permit and receive cumulative credit towards your subsequent provisional instruction permit to meet the six-month requirement before taking your driving test.
You must keep the expired instruction permit with your new instruction permit until you pass your driving test. The new instruction permit and the expired permit is the only proof of credit that satisfies the six-month requirement. When a new application is started, DMV does not retain the previous application information. If you lose your expired instruction permit, without the necessary proof of a previous application, the full six-month waiting period will be required before you will be allowed to take your driving test.