The conflict dialog lists the fonts you tried to install that already exist on your system.
To keep all of the previously installed fonts, click Save.
To replace all fonts:
Click Replace All.
To replace selected fonts:
Click a font you want to replace.
Repeat steps 1 and 2 for each font you want to replace.
When you have completed steps 1 and 2 for each font you want to replace, click Save.