COPYLC just means copying values from LC to group currency by factor 1.
I have a question why you load data in USD and CAD on the same entity?
if you want to convert data to two group currency, you just need add these currency to the Group dimension's property Group_currency,and set the entity's curreny property by using its local curreny. then the data will be translated into USD and CAD and copy to the group level.
about [AS_IS], please see the illustrate below
N-1:
LC:USD=1:2
act1 using [END]
act2 using [AS_IS]
entity currency account signeddata
E1 LC act1 100
E1 LC act2 200
after currecy translation
entity1 currency account signeddata
E1 LC act1 200
E1 LC act2 400
N:
LC:USD=1:2.5
entity1 currency account signeddata
E1 LC act1 200
E1 LC act2 300
after currecy translation
entity1 currency account signeddata
E1 LC act1 500 (200*2.5)
E1 LC act2 650 (400+100*2.5)
650= 400+100*2.5 ----for 400,copy from the last period of last year
Hope it's clear for you usderstanding