The error in Inkscape 0.47 seems to be in incorrectly handling nested preserved transformations (the group as well as its child each have an explicit 'transform' attribute). Once I converted the child of each group to a path and forced Inkscape to rewrite its path data (the transformation is now 'optimized' and stored in the node coordinates), the connectors in 0.47 behave like in 0.46 when moving a group with an attached connector (see attached file to test in 0.47).
The error in Inkscape 0.47 seems to be in incorrectly handling nested preserved transformations (the group as well as its child each have an explicit 'transform' attribute). Once I converted the child of each group to a path and forced Inkscape to rewrite its path data (the transformation is now 'optimized' and stored in the node coordinates), the connectors in 0.47 behave like in 0.46 when moving a group with an attached connector (see attached file to test in 0.47).