I'm using this fantastic mod alongside the Traveler's backpack mod and i've now wiped my backpack for the third time using the random build tool.

If the Trowel is used and it places a backpack in the world it'll wipe all the items/data and clear any upgrades applied once placed.

Would be nice to have some sort of blacklist for the Trowel to stop it from attempting to place that item, or even just blankly not allow it to place certain mods items.