04 06?

This question is probably simple with a simple answer. Perhaps it narrows
down to will it make a difference to the final product if I bisque porcelain
at 06 (usually I do it to 04)?

The reason for the question is that there is a terracotta piece already
fired to 06. It has some glued wood attachments that I want to burn away.
Firing to 04 would make it a darker red and a mismatch with several other
pieces of a set. Perhaps the refiring to 06 will do that in itself. That
is a question.

I would like to make a mix-match bisque terracotta and porcelain at 06. The
porcelain will later be glazed and fired to 6.

Any thoughts, and thanks in advance,

Marty
anything to save a firing