It's not a new issue with V4, it is a long standing issue.

V4's lack of an ability to apply a transmap just calls more attention to this old issue, as it puts texture makers back to the possette days when they could claim the problem wasn't their fault.

Gareee's note about masking however, shows that the issue can be addressed now, but only if the texture makers will finally get on board. And also shows that if this long standing issue continues, that would be the fault of texture makers.

Truth has no value without backing by unfounded belief.
Renderosity Gallery