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I inherited my mothers Ira and I have 2 brothers 

This money was to be split equally between us 

However my 2 brothers agreed to fill out a disclaimer and give their portion to me. 
My oldest brother turned in his disclaimer and it has been accepted. 
My other brother has not turned in his disclaimer for several months now. Merril Lynch says they can’t distribute any portion until they receive his disclaimer. I don’t care if he keeps his portion, but I don’t understand why myself or my older brother can’t get our money until my other brother turns in his documents