@nakleh it does not matter what you start from , i personally use generic
It is important what You set. And start the flow calibration first usually from 1.0 if you use 2 passes, if only second pass is used you need to know where roughly is the flow and set it a bit higher and then Fist pass can be skipped, Temp you start from the recommended by the manufacture for the first round of calibration , then is PA(K/dynamic flow) and at some point fine tune the temp and then repeat the flow and K. For the other parameters like cooling and speeds it is a bit more but starting from Generic is a bit more conservative than Bambu usually