Note variation overdub

Hi. I have a question about overdubbing tracks using the NV slider on 2000xl.
I recorded a bassline using 16 levels tuning, then I assign 'filter' to the NV slider, press 'after' and then try to overdub some filter movement to the track. It records the filter OK but erases any pitch variation. The only way I can fix this is by going into step edit afterwards and changing the pitch on individual notes. I've tried it with other parameters such as decay and it always seems to erase any other NV data that's on the track.
Was hoping some of you more experienced 2000xl users would be able to help out?

Thanks.

You can only use one parameter at a time on the NV slider.
Even in STEP EDIT, in the 2nd field you can only set one parameter at a time.
Both the 16 LEV and the NV are set there.
Just the limitation of the machine. It came out in the 1990's.
More recent MPCs may arrange things in a more versatile way. I don't know I haven't checked. But if you use a legacy product, you have to put up with it's 'mode d'operation'.

also, you can't even use note variation and 16 levels at the same time.. you can't even record a 16 levels melody and play it back with note variation effecting the same sound.. it makes all the note sound at the original pitch. (on the OG 2000 classic)

mr_debauch wrote:also, you can't even use note variation and 16 levels at the same time.. )

Ooh, that's what I meant all along. Guess I didn't put it very well

NV and 16 levels seem to be different ways of controlling the same part of the sampler engine.

so strange... but actually kind of cool... you can use it to create melody variations by turning on filter on a 16 level melody's note and it goes mono tone.. but then you turn off the after button to give the full melody

Thanks for the replies, seems that it's just a limitation of the machine.
Looks like that the only way to change filter, tuning, attack and decay simultaneously is in step edit mode.