I have two figures (constructed by many objects) in a .ai file (adobe illustrator cc). I'd worked on them separately, in that I'd just used live paint bucket tool for each one then expand the results, separately. Now, seemingly, each one has its own isolation mode. Assume an object just like a line in fig. A. I want to copy that object and use in fig. B. Reasonably, I should enter the isolation mode of fig. A, then copy the target line and place that at the desired location in fig. B. But the problem is that as soon as I exit the isolation mode of fig. A, the copied line is no longer visible in fig. B.
How can I resolve this issue?