Thanks for the reply.
So let's say I have an TIRA. I convert to Roth IRA. From this point onward, you are saying that every dollar I contributed (into my TIRA/401K originally) is now eligible for penalty-free and tax-free withdrawals from my Roth IRA account, even though those contributions were not originally made into the Roth IRA, but rather into the TIRA/401K. Correct?
Also, are employer-match contributions eligible for penalty-free withdrawal?