Importing and exporting raw seed data

[Sauderite]

Hello all,
I am using electrum from git as I wanted a standard BIP44 key for storing bitcoins. I am experimenting with saving/restoring my seed to ensure I will be able to do so in the future or on another client. For the most part, I have it working but am wondering how to turn a seed back into an electrum 13 word mnemonic...
What I have so far:
To backup a seed, back up the mnemonic of course then extract the seed:
from electrum import mnemonic
m = Mnemonic
print m.mnemonic_to_seed(sys.argv[1], '').encode('hex')
That outputs the 256 bit seed used to create the initial bip32 key. The initial bip32 key doesn't appear to be stored in the wallet. Only the mnemonic and m/44'/0'/0' is stored I believe. The key can be generated with:
sx hd-seed hexstring
from mnemonic_to_seed. Outputs the XPRV string.
So that allows me to restore the wallet into another client if need be.

Does anyone know how one gets that 256 bit key back into a usable electrum mnemonic?

[Abdussamad]

The mnemonic is run through a hashing function so it is not possible to convert the seed back to the mnemonic:

https://github.com/spesmilo/electrum/blob/12e9e40fce489d0221b21261c8d7d771dc9db887/lib/mnemonic.py#L121

[dabura667]

There is 0 compatibility for Electrum with BIP39. The 13 word phrase is run through a hashing algorithm to generate the main extended private key... however, BIP39 states that mnemonics MUST have words in multiples of 3.

13 is not a multiple of 3, so sx, and any other BIP39 implementation will not be able to support Electrum seeds.