I am experiencing a similar bug since tonight. On one of my characters i use 2 Gear Templates, 1st one for PvE and 2nd one for WvW.The WvW one is using seperate Legendaries (Claw of Khan Ur with Incinerator Skin, Quip with Hope Skin, Dreamer with Chuka Skin).Im using other Legendaries for my PvE Build so i can still swap Weapons via Inventory (for Blasting in Dungeons without them having sucked into the Gear Template Storage or having Sigils and Infusions removed on unequip because it is used on another Build).The PvE Build is using The Shining Blade with Bold Skin, HOPE, Incinerator and Chuka (none of them used in the other template) and various Ascended Staves. When i equip other Legendary Weapons on my PvE Build (say i swap from Sword/Pistol + Staff to Sword/Pistol + Shortbow for Stealthstacking and then replace Shortbow with Staff again) the Legendary Weapons that land in my Inventory unequip the infusions (atleast not getting destroyed if that is actually the case for OP).So i would have to reapply them whenever i reequip the Weapon again.I do have enough Infusions so they shouldn't get shared between these Weapons (i think that is the case tho).The same Gear didn't unequip Infusions on the other Template or on other Characters.No Sigils are getting removed for me. All Infusions used are the +5 Power Mighty Infusions from WvW. So im thinking of these possible Problems: The PvP template is getting confused with similar Weapons (or Weapons that use the same Skin) from the other Template and removes Infusions like it was the same Weapon in two templates. (This seems unlikely because it would be a two-way problem then, it is only occuring on one template tho)Specfic Gear Templates unequip or destroy Infusions from unequipped Weapons automatically.