Zashi derivation path

I put a seed generated by Zashi into Ian Coleman’s Mnemonic Code Converter ( BIP39 - Mnemonic Code ) and checked out the derived addresses. The transparant address shown in Zashi is only the 4th derived address at m/44’/133’/0’/0/3

Does anybody know why this is the case?

From Zip 316

To derive a Unified Address from a UIVK we need to choose a diversifier index, which MUST be valid for all of the Viewing Key Types in the UIVK. That is,

  • A Sapling diversifier index MUST generate a valid diversifier as defined in ZIP 32 section “Sapling diversifier derivation” 18.

  • A Transparent diversifier index MUST be in the range 00 to 231−1231−1 inclusive.

  • There are no additional constraints on an Orchard diversifier index.

Your seed didn’t generate valid sapling receivers for indices 0-3.

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