Descript automatically keeps the text of your transcript in sync with the underlying media, word for word. As you type corrections to your transcript, Descript analyzes the new text, and resyncs it to the audio underneath.
When you paste text while in Correcting Text mode, Descript will attempt to sync the pasted text to the audio in the immediate vicinity of the paste location. We restrict paste to 40 characters because more than that could break the audio/text sync.
If you need to paste more than 40 characters, we recommend switching to "Editing Media" mode, which allows for unrestricted copy and paste.