Are you trying to turn Flails into Swords, or Flails into a new weapon type that uses Sword animations?
If you just want to turn them into more Swords, just make all the appropriate changes in my workbooks, followed by setting their Weapon Type to Sword in FFTPatcher.
If you want them to be an entirely different weapon category that just operates as a Sword duplicate, you're out of luck because the Weapon Type controls the set of attacking animations that are loaded. As far as I know, no one's documented where the game loads attacking animation based on weapon type. This means that Flails and Axes can be intermixed because they reference the same part of the SPR but Flails and Swords cannot be. If you want a "duplicate" sword class in this sense, you'll have to make it work via changing the existing Sword-animating archetypes, aka Sword / Knightsword / Ninjasword / Katana / Rod / Staff.
If you just want to turn them into more Swords, just make all the appropriate changes in my workbooks, followed by setting their Weapon Type to Sword in FFTPatcher.
If you want them to be an entirely different weapon category that just operates as a Sword duplicate, you're out of luck because the Weapon Type controls the set of attacking animations that are loaded. As far as I know, no one's documented where the game loads attacking animation based on weapon type. This means that Flails and Axes can be intermixed because they reference the same part of the SPR but Flails and Swords cannot be. If you want a "duplicate" sword class in this sense, you'll have to make it work via changing the existing Sword-animating archetypes, aka Sword / Knightsword / Ninjasword / Katana / Rod / Staff.