Here's the explanation of the omissions.
The omissions, Colonel Vindman said, included Mr. Trump’s assertion that there were recordings of former Vice President Joseph R. Biden Jr. discussing Ukraine corruption, and an explicit mention by Ukraine’s president, Volodymyr Zelensky, of Burisma Holdings, the energy company whose board employed Mr. Biden’s son Hunter.
The rough transcript also contains ellipses at three points where Mr. Trump is speaking. Colonel Vindman told investigators that at the point of the transcript where the third set of ellipses appear, Mr. Trump said there were tapes of Mr. Biden.
The relevant part of the transcript with the third ellipses:
The other thing, There’s a lot of talk about Biden’s son, that Biden stopped the prosecution and a lot of people want to find out about that so whatever you can do with the Attorney General would be great. Biden went around bragging that he stopped the prosecution so if you can look into it... It sounds horrible to me.