Dynasty weapons.

Visited the SOUL FORGE today. Discovered something strange. In the game, I have Arachne upgraded to level 4, but SOUL FORGE shows it as level 3. Soul Eater is upgraded to level 5, but SOUL FORGE shows it as level 4. Soul Stealer is level 4, but it's shown as level 3. Previously, I wrote that my Dragon's Tongue was missing. I checked again. In the game's Dynasty Information, it's there, but it's not visible in SOUL FORGE. I tried to play with it, but it doesn't gain experience after battles. It seems SOUL FORGE is poorly made.