duplicated entries while using A2.0

yas@hea.iki.rssi.ru Sep 1, 2000

Hello, All

When using USNOA A2.0 with Guide there are duplicated stars' entries.
As I understand this is due to differencies in positions' data for
the same stars from GSC and A2.0.
How could I switch off using GSC catalog while using A2.0?

I guess this is a common problem while using the same data from
different catalogs.

Thank you in advance, Alexander Yascovich