Migrate storage bus config (#420)

src/main/java/com/glodblock/github/common/parts/PartFluidStorageBus.java

@@ -3,7 +3,14 @@ package com.glodblock.github.common.parts;
 import static appeng.util.item.AEFluidStackType.FLUID_STACK_TYPE;
 
 import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
 
+import com.glodblock.github.util.Util;
+
+import appeng.api.storage.StorageName;
+import appeng.api.storage.data.IAEFluidStack;
+import appeng.api.storage.data.IAEItemStack;
+import appeng.api.storage.data.IAEStack;
 import appeng.api.storage.data.IAEStackType;
 import appeng.parts.misc.PartStorageBus;
 
@@ -17,4 +24,20 @@ public class PartFluidStorageBus extends PartStorageBus {
     public IAEStackType<?> getStackType() {
         return FLUID_STACK_TYPE;
     }
+
+    @Override
+    public void readFromNBT(NBTTagCompound data) {
+        super.readFromNBT(data);
+
+        // Migrate from old data
+        var config = this.getAEInventoryByName(StorageName.CONFIG);
+        for (int i = 0; i < config.getSizeInventory(); i++) {
+            IAEStack<?> stack = config.getAEStackInSlot(i);
+
+            if (stack instanceof IAEItemStack ais) {
+                IAEFluidStack afs = Util.getAEFluidFromItem(ais.getItemStack());
+                config.putAEStackInSlot(i, afs);
+            }
+        }
+    }
 }