Some west bird re-registration have not completed?

[Diamondbacks2004]

I've seen all of these except for the west bird re-regs when are these west ones supposed to happen as of now no west ones have been done. What happened? postpone or cancel? :unsure:

Some US Airways operated by America West Airlines planes have its registration not yet changed, here the list of them.

Boeing 737-300
REGISTRATION #
current / future reg MSN Aircraft TYPE
-------------------------------------------
N164AW will become N337AW (23625) B737-33AQ
N166AW will become N338AW (23627) B737-33AQ
N168AW will become N339AW (23629) B737-33AQ
N175AW will become N342AW (23634) B737-33AQ
N154AW will become N380AW (23776) B737-3G7Q
N155AW will become N381AW (23777) B737-3G7Q
N157AW will become N383AW (23779) B737-3G7Q
N158AW will become N384AW (23780) B737-3G7Q
N160AW will become N385AW (24009) B737-3G7Q
N322AW will become N387AW (25400) B737-3G7Q
N332AW will become N394AW (23748) B737-3Y0Q

Boeing 757-200(ETOPS)
REGISTRATION #
current / future reg MSN Aircraft TYPE
-------------------------------------------
N901AW will become N210AY (23321) B757-2S7
N902AW will become N211UW (23322) B757-2S7
N903AW will become N212UW (23323) B757-2S7
N904AW will become N213UW (23566) B757-2S7
N905AW will become N214UW (23567) B757-2S7
N906AW will become N215UW (23568) B757-2S7
N908AW will become N216UW (24233) B757-2G7
N909AW will become N217UW (24522) B757-2G7
N910AW will become N218UW (24523) B757-2G7

Airbus 320-200
REGISTRATION #
current / future reg MSN Aircraft TYPE
-------------------------------------------
N672AW will become N230UW (2193) A320-232
N673AW will become N231UW (2312) A320-232
N674AW will become N232UW (2359) A320-232
N675AW will become N233UW (2405) A320-232
N676AW will become N234UW (2422) A320-232
N677AW will become N235UW (2430) A320-232
N678AW will become N236UW (2482) A320-232