Dictionary Data has been removed, When using "split" command to split Brep which has binding custom "key-value" information

I have an Brep Geometry which has binding dictionary data(aka “key-value” pair data) ,But surprise me is that, when I using command “split” to split the Brep, The dictionary data has been removed or disapper, And I don’t know Why. Is anyone to help me? Thanks.
(My Rhino Software version is 5)

Hi @cughudson,

Does assigning the dictionary to the object’s attributes, rather than the geometry, make a difference?

– Dale

Hi @dale
I’ll have a try