Problem storing an edited RAM patch

[NoLie6]

Hello together,

I have a strange thing which I do not understand:

In general I thought the RAM patches are possible to edit and store. At my virus snow I have most of the patches as copy in the ROM anyway. So I had modified the patch

RAM 6-2-6 'PPGsaws BC'

at the settings of Vibrato, Effects, Guide (which are directly accessible on display via the 3 variable knobs) as well as the Cutoff and Resonance (permanent knobs). I stored my changes directly to the same place RAM 6-2-6.
But (not all of) my changes have not been stored permanently. Only the settings of Cutoff and Resonance have been stored!?

And then I found out the when I change the settings for Vibrato, Effects, Guide I did not see the display the kind of "currentValue [defaultValue]" which I see e.g. for Cutoff and Resonance.
Some other RAM patches, e.g. 2-2-6 'Pitchy AV' do have that for e.g. Width (showing me the default [0]).

The same happens for my modified RAM 2-7-6 UK'BassMS patch! Only my changed Cutoff and Resonance values are stored.

Please can someone explain me that? It does not make any sence. Why can I not modify any value of a RAM patch and store it? Even if there is a statement anywhere in the documentation - it does not make sence.

I used the search but I did not find something, altough I think someone must noticed that too?