Your service records are part of your VIN history. Technically speaking you are covered under the warranty should any issue happen due to any service performed at a dealership. A simple oversight be the service department employee that did the last oil service is not that critical. You obviously keep good account maybe records as well when the next service is upcoming you should receive an email to notify you. At that time, I am sure they will make sure you timers get set properly. As for Mazda and many other auto manufactures making some service aspect to reset service information not easy it is because of fraud issues that have happened over the decades.
So basically relax you will get it taken care of at your next service and it is now a record on your Mazda !

For other this is interesting because so many of you not only with your Mazda but I know your other vehicles will often drive several hundred or more miles and go weeks or longer when the engine check light appears but you don't see or feel any issues. What you all don't realize is the ECU keeps what is called clocks and or Timers that record how many cycles or engine starts from cold overnight sitting you go before the DTC is resolve (not just cleared).

LOL I get so often when customers come into the shop and while I am scanning their vehcle to write a work order they tell me the engine check light just appear a couple days ago. But I look at the counters and it will often show the true story, like a dozen or more engine cycles since DTC activation. LOL But I never show that to the customer I just note it in my own code on the service order.