2019.1 - Exshare data feed - Unit trust interest payments shown as dividends
Since April 2017 there has been a new setting in the Exshare feed to distinguish unit trust dividends and interest.
If you want old dividends to be changed back to interest in Edit Security > History, you would need to rerun old Exshare download files. Note that there was no problem on the Autopost itself. The Autopost showed them as dividends because they had been read into Edit Security > History as dividends from the Exshare feed.