Netlist with “assign” / RC and Encounter

Hello,

There is a signal which crosses a few hierarchies and changes its name each time; but eventually it goes to analog macro and intention is to avoid any buffers on this net.
Using attributes “set_donot_touch” or “set_ideal_network” on this signal prevents RC from buffering it, but the problem that is keeps “assign” statement in the netlist each time the signal changes name / hierarchy.

My questions are:
1. Could it be a problem for Encounter P&R flow (or LVS/DRC) to deal with the netlist which includes “assign”?
2. Is there an elegant way to get rid of  this “assign” and to route this net  without buffers?

Thanks a lot!
__
Boris.