Say I have a figure that targets a character who has Shape Change and the Shape Change character succeeds in its Shape Change roll. Why do I remember a ruling that the attacker must still use the same attack action and choose a new target even if there are no targets available in which the attacker's attack action results in a token regardless of if they rolled for an attack? Similar to the effect of a failed Break Away roll... swear I remember that ruling...and ruling that Elevated characters don't ignore Blocking Terrain at lower levels during LOF....

You probably remember the first one because it's the current ruling?
As for the second, LoF will be blocked by blocking terrain between characters of different elevations. If the blocking is below both of them, though, LoF is not blocked.

You are correct:
The Action has been declared, if they cannot attack from that square then the action continues with out an attack.

Also LoF for blocking terrain, you would check the character at the lowest elevation and if there is blocking at that elevation or higher between the characters then LoF is blocked.

You remember the right ruling. A successful Shape Change roll means the attacker needs to pick a new target. If no other targets are available, the action ends without an attack and the attacker gets a token.

page 14 of LOF from rim to lower terrain that has blocking is blocked .

That's correct, but if the blocking exists at a lower elevation then the one you are targeting then it is not blocked.

Also remember, indoors blocking exists at all levels so it will always block LoF.

Like two characters at level 2 terrain drawing LOF between each other with level 1 blocking terrain between them isn't blocked. But a level 2 character on the rim drawing LOF to a level 1 character who is behind level 1 blocking terrain is blocked? Being elevated only grants you to see over hindering(though not through) and over smaller characters...

Correct in both scenarios.

Elevated allows you to see over hindering as well, the only way to get bonus from hindering is if the target is occupying it.

Quick question regarding Shape Change and Telekinesis. If a figure tries to use TK to attack an opposing character and that character rolls Shape Change can the attacking figure then instead choose to use TK to move a friendly figure?

No. Only the attack is illegal; the object is still placed in the target square.

Unless you ment that you were trying to Target and move the opposing character, in which they ruled shape change you could choose another Target.

Interesting. I never considered that the object would not be destroyed as it usually is when an attack misses.

With Shape Change the attack never happened. Same thing would happen if you charged someone and they ruled shape change, if there is no other character to attack you would just sit there holding the object.

That's what I meant. I should have been clearer. The attacker was trying to target the character who had Shape Change to move him out of the way. The Shape Change roll was successful and the player wanted to know whether he could use TK to move a friendly figure instead.

Of course I'm not sure I knew that about the object so that's helpful too.

Dang I messed up a little then. I always allowed them to do another action but they have to do something with the token. Oh well, thats why I look at these things to get an idea.