it's all 2 do with the way SX handles audio down 2 the core. Basically what we have in the arrange/ main window is just a pointer 2 a file on the Audio Poll. So when u apply an envelope cubase adds that info 2 an internal folder called Edits. so when u play the audio it will read the main file till it reaches the edit, from then it will read the edit file and then go back 2 the original. So if u wanna make the pitch thing permanent U have 2 do audio/ bounce selection. This way U've created a new file that has yer edits and is already loaded into yer audio Pool.
If u want longer envelopes u have 2 strap a couple of waves 2gether 'till u got the audio part just the lenght u need, bounce it and then do the pitch thang!
U constantly bounce in order 2 have several small click of the same stuff doing slightly different things.
Make yer key shortcuts, I made 1 macro and created a key shortcut on my cubase that I press ctrl+shift+b and it imediatelly bounce/ correct dc/ normalise.
Z