Waveform 12 copy marked section

[SingingHOG]

Hi forum,
although a long time Tracktion user I am a novice in many of the features so assume no knowledge...
In previous versions I regularly used the feature to mark a section using "i" and "o" and then using "Copy Marked Section" and then "paste" into another track. This feature seems to have gone. I know I could use "Duplicate" and "Split Clip" etc. but that would be a real pain in a large recording. Any help appreciated.