on modifier renaming it will became instanced to other if any other object with modifier with same name already existing in scene.
for example i have already inner walls with shell modifier =0.15m named 'inner_walls' and apply shell modifier for one more object and rename it to 'inner_wall' it will became =0.15m and instanced
if it of course possible.
thank you in advance
By harumscarum · 2012-02-21