Do you actually still need to keep the old Stormcaller weapons?

[Cynder.2509]

I thought you'd need them for the charged versions so I kept them but sadly they're not needed and now they clutter up my bank along with the tengu echo set (which I believe will be needed soon).So should I still hold onto them just in case?I don't want to have the same case with the upgraded Boreal weapon set when throwing them away was a bad idea.