weskandar
commented
3 years ago Just as a note, this is because the replies are saved as media file types and so they're in a different table altogether. This is just to note that they don't appear, you can find them if you export signal messages to an sql database and browse the table. If all tables are concatenated in CSV it would be too many empty messages.
Detailed description
I was able to decode the backed up messages in a CSV file (XML doesn't work) but missing from the export are messages which are replies to other messages. That can be observed by looking for specific text that simply doesn't exist in the Excel file. It doesn't matter if it's a reply to media file or text file, it just doesn't show up as text.