When I apply a shadow to a group of objects and try to copy the effect to another group the shadow doesn't show up on the second group, but only on whatever object within the group I hover over first. When I drop the effect onto the new group it applies it to individual objects one at a time so that each object in the group has it's own shadow instead of the entire group having a single shadow like the original group from which it was copied by dragging the FX icon from the effects panel and hovering over the new group. I'm pretty sure I used to copy shadows from one group to another all the time, but now it doesn't work. I don't see any info about dragging/dropping effects from one group to another – is this no longer possible?
Drag and Drop the FX icon from the Effects Panel - and drop it on to of whatever object you want it on in your layout.
That's not the issue – I'm trying to drag the effect from a GROUP to another GROUP but the effect only gets applied to a single object within the group, not the group itself.
Make an object style - then apply that?