Link up --physical and --special Z moves to complete their data

[helblinglilly]

The moves between 622 and 657, Z Moves, are usually identical to one another.

For example 623 is effectively the same as 622, with the only real difference being that one is physical, the other specia. I've not played S/M which is where I think this comes from - but I can understand the rational here.

The problem is that for the moves in that range id + 1 has Dummy Data in all of its Flavour Text entries. Could these be combined for completeness?

I also wanted to ask about the learned_by_pokemon fields on those moves (GMax as well). Is that data that's simply not been populated yet because of the sheer volume, or is this by choice? If every Pokémon of a certain type can temporarily use those?