Cleaning cartridges are inserted into printers in order to remove stubborn or heavy clogs which are not able to be removed with normal head cleaning procedures with edible ink.
In the case where cleaning cartridges are inserted, then you would need to run a couple of cleaning cycles through the maintenance section of the printer. Leave the printer sit overnight with cleaning cartridges inserted and the printer left powered off.
The next day remove the cleaning cartridges from the printer and replace with a set of new full edible cartridges. Now run 1-2 cleaning cycles to draw fresh edible ink through the printhead. After each head cleaning, run a nozzle check pattern to see if the colors are coming out and that no missing gaps appear in the printout. If gaps are still appearing then run another head cleaning and then another nozzle check.