Changing the data in the same block in multiple locations

I am trying to take a block that has been created with attributes and be able to include it in a drawing.  This block is the Title block for a drawing.  The way we do drawings is to put multiple title blocks in one drawing file so that when you open one file you have all the drawings in one spot.  What I am trying to do is be able to have the attributes in the block be able to be changed in one block and then the other blocks will change as well to match the original.

For example:  if I have 4 of the same blocks in one drawing and I want to change one of the attributes (date etc) I want that to show in all 4 blocks.

Confusing?

Thanks

Cory