Enchanting a weapon with build in enchant.

[oNISYG]

Does it overwrtite it or do they stack?

[ZorgNeo]

Would like to know too. I got the weapon from Caldeus and afraid to lose the chant.

[Vicious]

Not sure if its different based on rarity, but enchanting one of Gully's weapons that had healing on it with fire removed the healing.

[tankanidis]

If the weapon has a base enchant that is in white writing, it will stack with it.

If the weapon has an enchant applied through enchanting table (green enchant name), it will overwrite.

Tested with Garrison's level 13 Sword that has an innate poison on it in white writing, added a +stam/ap enchant to it, both exist on it atm.

[Enfys Ellezard]

It changes the symbol at the bottom right of the item icon. USe that to determine what has been enchanted.

[Lightning]

I'm kind of confused about this as well, Nightwing has a green passive called Shadow strike but it doesn't show an icon for it in bottom right will that get overwrit or stack?

[Honorable_D]

If it is a special enchant, like the Caldeus Pistols, that'll stay and won't be overwritten. Some of the weapons come pre-enchanted with standard enchants, though, and those WILL be overwritten.

[Accelerator]

IT didn't stack. It remove the previous enchantment. But you can add enchantment ingredient ratio to 200% for rare and 300% for epic once. Hope this help.

[Simbul]

I've enchanted Caldeus' Pistols and the bonus stacked with the existing "Caldeus' Ambush".
You can also see it in the screenshot here (not mine): https://www.reddit.com/r/BattleChasers/comments/74mee2/insane_monika_dmg/