Good news! TOS made my account whole from the trade issues. Wish it hadn't happened, but they did the right thing.
You should appriciate that, some brokers would never do that even if its their mistake. So I would say stick with TOS
One can be sympathetic to the difficulty of integrating the TOS and TD accounts and switching clearing firms. Nevertheless, in this case the integration is very far from seamless and some clients are bound to lose money because of it. They should be compensated if their loss is directly related to TD errors or platform malfunction due to the transfer. But all clients are being greatly inconvenienced. The proper thing to do would be to rebate commissions until the transfer of accounts is complete and everything is working properly, because their clients are having to assume additional risk (poor fills, not able to exit positions, erroneous fills, money in wrong account, etc.), to say nothing of annoyance. I don't expect they will do that. There are many other brokers and other very good platforms.
I guess you haven't had a problem with your broker yet with your broker. But unless a broker is "perfect" you want to know that when there is a one you will be made whole. There is a lot of people that have learnd that the hard way...