I downloaded a trial version of Picoscope6, which partially solves the problem... now the trace remains visible once opened, which is good...
However, I acquire multiple traces on the same plot (using the digital colour, infinite persistence setting) and only the final trace that I have acquired is displayed. It also appears in the analogue display, which I don't seem to be able to change in the demo version... Is there any way to display all the traces? (all the traces are momentarily visible in the old version of picoscope, so the data/file is there somewhere)
I'd really appreciate any suggestions!