Place the homeopathic on the test plate. Go to a blank filter screen so there are no remedies to imprint. In the imprint page of your Qest4 software click the laser feature. Once the window pops up go through the procedure of imprinting the laser. the first process it will go through will say "erasing memory". This will scramble the imprint currently in your homeopathic. Once the software has gone through the procedure the homeopathic will be ready to be imprinted again.