Questions about GC metrical books for Biala, Petrykow, Stradch

[jhzs]

My ancestors in former Galicia were of different nationalities (Polish, German, Ukrainian), religions (RC, GC, Lutheran) and a few combinations (Polish RC, Polish GC (?), German RC, German Lutheran, Ukrainian GC). So far I've been researching mostly RC sources (from polish state archives or mormon collection and some lutheran from the same sources). It's time now to move to GC parts of my tree. I have always knew that one of my great grandmothers was Ukrainian and GC.
Her name was Ksenia Salewicz, daughter of Ignacy and Zofia Ferenz. She was born around 1876, lived in Biala (north of Ternopil), but she might have been born somewhere else, possibly Stradch, close to Janow Lwowski. Recently I learned that also my second great grandmother, Katarzyna Zolynska, born around 1875, daughter of Feliks Zolynski and Tatiana Stanislawczuk, from Petryków, south of Tarnopol might have been baptized as GC as I could not find her birth record in RC books. I found records of a few of her brothers and none sister so I think that her mother was GC and she was also baptized in her church. I had the same situation in mixed RC/Lutheran branches. Stanislawczuk family was from Biala, I also found some of Stanisławczuks in Zabrobela. Other surnames that appear in this branch of a tree are: Panko, Muzyczyszyn (or Muzyka).
Here are some questions, problems etc. I have at the moment. I would be greatful if someone can answer or make it clear to me.
1.I am looking at the moment for GC books for Biala. I know that there was a GC church in the village (according to a database on Baza Miejscowoе⌡ci Kresowych), but I can not find records for this parish in LDS catalog. I wonder whether it was really a parish or a filial church of some other parish, for example in Tarnopol or in Petrykow (Petrykow GC records can be found in LDS catalog, but earlier years, Stradch books are available through LDS.). There is only one year for Biala (1910) in State Archive in Warsaw and it is perhaps the right Biala as it is in Ternopil deanery, so it suggest there was a parish there. But was it the same around 1870?
2.Can those books be stored in state archives in Ukraine? And if so, where?
3.Are there church archives in dioceses in Ukraine? Is it possible that they have those books?
4.Are there other GC sources I could look for like lists of parishioners or other?
5.Did Mormons film all metrical books stored in Ukrainian state archives? Did they film all Lviv or Ternopil archives' holdings? Is all what they filmed available on micorifilmes?
6.I would also like to know anyone researching those villages and/or surnames (Salewicz, Stanislawczuk, Panko, Muzyczyszyn, Zolynski). I have some experience in researching RC sources for those villages so I can offer help. I can offer also information about sources available in polish archives and generally research in Poland.

Regards,
Zbyszek