I imported a sketch in a separate drawing and selected the drawing where I actually draw the cave plan... I was expecting to see the sketch below the plan, but the sketch is not visible when several drawings are selected. I don't know if it's a bug but if not that would be nice to be able to display sketches when several drawings are selected as it keep things nice and tidy.
Every drawing could have an individual sketch. If you select more the one drawing, only the sketch of the first selected drawing will displayed. This is also the active drawing for new elements.
Maybe my suggestion needs more context. When we go on expedition, after each exploration survey, we produce a survey shot paperchart and then we draw a scaled sketch based on survey sketch and notes. We always do this because the sketch done during the survey will always miss some information, details, etc. and it's better to do it when memories are still a bit fresh. So for each cave we have a collection of scaled sketches. However, importing them in CRP is far from optimal as only on sketch per drawing is allowed. Also our sketches overlaps so even if multi sketches was possible it would be complicated. This is why I tried to import each sketch in an individual drawing below the drawing used for the plan, hoping I could select the plan I'm working on and the specific sketch I want to display, like layers. so if the sketches could be displayed as layers it would be great.