[aur-general] Can't upload package

[Biru Ionut]

Hi,
Somebody has deleted *-ubuntu packages and i wanted to adopte and 
maintain them. But i have a minor problem.
I can't upload 2 of 4 packages: fontconfig-ubuntu and libxft-ubuntu.
It gives me that error:

You are not allowed to overwrite the fontconfig-ubuntu package.

You are not allowed to overwrite the libxft-ubuntu package.

Can somebody fix that problem?