Where is the message in multisig transaction?

Some exchanges use message to distinguish different users. It seems they can’t carry multisig transaction, but why? You can still input message when doing multisig transaction, why it disappeared in the blockchain?

Thank you for answer

It doesn’t disappear. It’s in inner transaction.
But don’t use multisig when you sending to exchange. A lot of them doesn’t support it.

Example multisig transaction with message:

http://chain.nem.ninja/#/multisig/60c088a242c74c33e0f85373ea229fdf9c375b8d1126d3c0307f74ed214f28e3

Thank you very much. So it’s a problem of the blockchain browser website. The explorer.ournem.com don’t show inner transaction, so I thought it disappeared.

Yes. Reported here: