Given the amount of information you've provided, its difficult to discern where exactly the problem is coming from, but the most likely issue is that the actor events are not referring to the correct units/abilities. If you have a custom merge ability, or a custom archon unit, make sure that the events of the respective archon actor are making the correct references. Look for the event "AbilMorph", and make sure that the "MorphTo" term is set to the archon. If this doesn't work, please provide more information so that we can appropriately fix it.
When I change archon model the merge animation is missing. I only see an archon model while merging instead of it. Please help.
Given the amount of information you've provided, its difficult to discern where exactly the problem is coming from, but the most likely issue is that the actor events are not referring to the correct units/abilities. If you have a custom merge ability, or a custom archon unit, make sure that the events of the respective archon actor are making the correct references. Look for the event "AbilMorph", and make sure that the "MorphTo" term is set to the archon. If this doesn't work, please provide more information so that we can appropriately fix it.
@AlphaTiberius: Go
Thanks. It all works properly now.