Exactly.Yes, but the link Bob posted isn't doing that; RA2 is connected to the LCD.
However, note that electronics-diy counter has RA1 connected to +Vcc (why?) and RA0 unconnected. So, I suspect the schematic is in error, either intentionally or not, and they probably have either RA0 or RA1 connected to RA4 to flush the prescaler. Anyway, it hardly matters. I've built these things before, and I know how it's done.
BTW, I was thinking of including the 1 GHz prescaler in the flush operation which would give several additional bits of resolution.