How does raid locks work?

[Assininboin]

I'm a little confused with how the locks work.
On DS 10man I am saved to Warmaster since my raid group decided to disband after the tank disconnected.
When I try to enter another DS 10man that has downed Warmaster and is at Spine, I am loaded into my own instance instead of theirs.
Is that how it is meant to work? Since it seems that I wouldn't be able to progress if my raids cannot be continued.

[Anyone0]

If you are saved in the instance then you can not another raid of the same instance. On retail you can do that if the other raid has the same or more bosses killed but I think that was added in MoP. Not possible to do that in Cata.

[Assininboin]

Actually it was in place since WOTLK.
It is called Flexible Boss-based Lockout.
Used for: Normal difficulty raids from Wrath of the Lich King through Throne of Thunder.

You can only kill a boss once per week, and you may not enter an instance where a boss is alive that you have already defeated that week.
You can move from group to group during a week as long as you’re joining instances that don’t have bosses alive you’ve already killed.
If you enter an instance that is more progressed than your own and get saved to it, you will be locked to all prior bosses.
You can move between 10 and 25 raid size, given these constraints.

Guess.. Warmane doesn't support this? :/

[Mercy]

Actually it was in place since WOTLK.

Since 4.0. Wrath raids were relevant in the Cata pre-patch still, prior to Cata launch. Technically not Wrath, though, especially since the patch we use is the last official patch for Wrath: 3.3.5a

Guess.. Warmane doesn't support this? :/

Can't comment because I'm unsure of it.

[Sixtyninee]

Actually it was in place since WOTLK.
It is called Flexible Boss-based Lockout.
Used for: Normal difficulty raids from Wrath of the Lich King through Throne of Thunder.

You can only kill a boss once per week, and you may not enter an instance where a boss is alive that you have already defeated that week.
You can move from group to group during a week as long as you’re joining instances that don’t have bosses alive you’ve already killed.
If you enter an instance that is more progressed than your own and get saved to it, you will be locked to all prior bosses.
You can move between 10 and 25 raid size, given these constraints.

Guess.. Warmane doesn't support this? :/

Everything related to a "Flexible Boss-based lockout" appears during 2014. So no, it did not exist during WOTLK.