Myself and several members of the Lucee Google Group have been battling the issue of web mappings and cfimport. I understand that the LDEV-355 Rejected was rejected based on the taglib is something compiled so the mapping cannot be dynamically set in application.cfc and thats fine.
When I map at the server-admin the mapping works but I am unable to have more than one of the same mapping which I need, which is the purpose of the web-admin I thought. BUT when mapping at the per-site web-admin a specific mapping does not work. So what this appears to be is that the web-admin mapping is being ignored and only looking at the server-admin for mappings by CFIMPORT. Let me know if any clarifications are needed.