[OSM-talk-be] When using Contact (Schema with 'contact:*'prefix) and contact (common schema)

[Jakka]

Hey,
When using Contact (Schema with 'contact:*'prefix) and contact (common 
schema)
Contact (Schema with 'contact:*'prefix) needed when multi contact are 
possible ?
using contact (common schema) single contact?

Does this give a problem when using a program like umap you need always 
use double "filter/Overpass-turbo.eu" (phone-fax-website-email) like

tag email=xxx at yyyyy.com and
tag contact:email=xxx at yyyyy.com

or am i wrong?

Jakka