Have you ever seen any records at all from Krasna before
1870? At least you know that some records exist.
I would send a request to the State Archives in Przemysl and ask if they hold the Greek Catholic Church records
for Krasna. If they write back and say that they do then you can send a request and ask about who you need to find
and your relationship to them. I do not ever send anything
to them in way of payment untill I see what they found.
They have a habit of sending you back the information you sent them in the first place! But I have had some good luck to. You may have to wait a long time to get a reply.
The archive offices,some of them close for a time in the summer.
Then they will send you a special account number that you have
to send directly there. The only place that can do this is a Polish place that sends to Poland. I go to the Polish
travel agency nearby. There you will have no cost (or very little .
If you get a reply that the records are in Gmina Korczyna,which is probable then write a request to them.
For Przemysl you can sent request by e-mail. For Korczyna
I would send my mail a request. Sometimes it is good to send request to both places. It is always best to go in person but you have to notify them first when you will be there.