Parshat Tzav seems like it's a repetition of Parshat Vayikra. It repeats the korbanot and their halachot. However, the order of the korbanot is different in Parshat Tzav and Parshat Vayikra. In Parshat Vayikra the order reads as follows: olah, mincha, shlamim, chatat, asham. In Parshat Tzav the placement of the korban shlamim moves from third to last so that the order now reads as follows: olah, mincha, chatat, asham, and shlamim.
Why re-list the korbanot and why change the order?
Ramban says that the repetition and change in the order hints at the subject being addressed in the two sections. Parshat Vayikra addresses Bnei Yisrael, the people, while Parshat Tzav is directed toward the kohanim. This is seen from the opening pesukim of each parsha. Parshat Vayikra opens with Moshe addressing the People:"Speak to Bnei Yisrael and tell them, if an individual among you wishes to offer a korban to God, then..." (Vayikra 1:2)
Are there any other reasons why it is redundant? Are there any others reasons why the order is different?