Base information

• Minecraft version: 1.12.2
• Mod version: 2.3.15.312
• Minecraft Forge version: 14.23.5.2768
• Mod Pack: Stoneblock 1.0.25

If you fusion craft fully charged wyvern armor into draconic it will lose its charge after finishing, however before you press start it tells you that it will keeps it charge level.