I think that this should answer your problem:
en.fairmormon.org/Book_of_Abraham/Joseph_Smith_Papyri/Church_disclosure_of_%22Book_of_the_Dead%22
Nibley provides more information
In addition to photographs of the papyri and a discussion of their provenance, the Improvement Era began a continuing series of articles by LDS scholar Hugh Nibley in January 1968.
Nibley’s material did nothing to hide the fact that the JSP were from the Egyptian Book of the Dead.[4]
In August 1968, he repeatedly emphasized that much of the text was the Egyptian Book of the Dead:
“…the texts of the ‘Joseph Smith Papyri’ identified as belonging to the Book of the Dead” (p. 55)
“…The largest part of the Joseph Smith Papyri in the possession of the Church consists of fragments from the Egyptian Book of the Dead, the fragments having been recently translated and discussed by no less a scholar that Professor John A. Wilson.” (p. 57)
“These points can be illustrated by the mst easily recognized section of the Joseph Smith papyri, namely, the fragment with the picture of a swallow, Chapter 86 of the Book of the Dead…”(p. 57)
“…we may take the best-known picture from the Book of the Dead, the well-known judgment scene or ‘Psychostasy,’ a fine example of which is found among the Joseph Smith papyi.” (p. 59)
Lest the reader miss this claim in the small print, it was reprinted in large bold type across two pages:
“The largest parts of the…papyri in possession of the Church consists of fragments from the Egyptian Book of the Dead…” (pp. 56-57) See image (680 KB).
Conclusion
Of the 11 fragments, one fragment has Facsimile 1, and the other 10 fragments are funerary texts, which the Church claimed from the moment the papyri were rediscovered.
**There is no evidence that the Church has ever claimed that any of the 10 remaining fragments contain text which is contained in the Book of Abraham.
The critics are telling us nothing new when they dramatically “announce” that the JSP contain Egyptian funerary documents. The Church disseminated this information as widely as possible from the very beginning.**
There is more information in the above link. The Improvement Era was a church published magazine which eventually became the Ensign.
It often amazes me the nonsense I have to read on the mormon threads pretaining to mormonism. Now the question is: will the catholic poster learn from his mistake?