Custom Mythic Path

[zac.m15]

In a game that I am running, we are using the Mythic rules for pathfinder 1e. I wanted it to be a bit different than the regular mythic rules, so I homebrewed a system with fewer mythic powers per day, but they get more path abilities (specifically 3 at tier 1 and then 1 every tier thereafter). I am trying to create a "new" that is exactly the same as a previous mythic class but changes the path abilities gained. (ex: Copy the Hierophant class and rename it with 3 in Row 0 of the Path Abilities Gained Array) I did this successfully, but now when I use on of these classes, it has no path abilities to choose from (other than universal). Is there a way to make this new class draw from an already existing list? For example make my new "HierophantAlt" choose from the original Hierophant Divine Surge and Path Abilities list?