Long stories in the chronicles were typically transcribed without much change, later scribes tried to accurately reproduce the previous text. All the more surprising is the chronicle text of the SMF, which shows great variability, as if "inherited" from the variability of Prologue texts.
Consider first the 4 oldest texts that come from chronicles completed no later than the end of the 15th century.
The text of the Sophia 1st Chronicle older recension
The text of the Novgorod 1st Chronicle younger recension
The text of the Moscow codex of 1492
The text of the Vologda-Perm chronicle
In general, the chronicle texts of the SMF are a rather strange picture of the involvement in the chronicle of a large foreign story of non-chronicle origin.
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