gr and ir post to copa

hi,

1) for item base on standard price, price difference during GR or IR will post to copa. does it mean if GR price difference is 10 and IR the price difference -2, then the total difference in copa is 8?

2) for item base on map, how does the difference flow to copa? the changes in stock account how to flow to copa?

3) for item base on standard price, after miro posting, why no profitability analysis in accounting doc.

4) for item base on map, after miro posting, i do not see profitability analysis in accounting document. why?

thanks