Virus TI and Multi-mode

[djd_oz]

I'm attempting to use the Virus TI without a computer with Multi-Mode. The manual states the below,

In the Virus TI however, each of the 16 Parts actually contains
the equivalent of a Single program. Parts also require a few
additional parameters (e.g. transposition, keyboard range)
which are all accessed via MULTI EDIT – hold down SHIFT and
press the master EDIT button to the left of the display:

However, when I load a single onto a part in a multi, tweak away and store this multi. When I reload this multi patch, it reverts to the settings from the single. This contradicts to what is stated in the manual.

How do you manage multi-mode patches?