Geolocation has changed targeted domains, or has it?

[Vovia]

I am monitoring two domains; a .com and a .com.au in quite a competitive sector (men's underwear online sales) last month the .com site completely dropped from rankings sight in Google International SERPs but, the .com.au site is actually ranking (quite respectively too) in the International/US Google SERPs. I have no idea how, when or why but it's now been the case for two months. Help please?

[Gyorgy]

Didn't they implement a cross domain canonical tag? I had a similar client that has .com.au and .com too, and started ranking better with the Aussie ccTLD after the Panda update but recently they implemented a cross domain canonical and the Aussie ccTLD disappeared from the SERPs.

[Vovia]

Thank-you, I will try  and let you know.