ACADE has some minimal P&ID functionality but does really sound like your company made the wrong choice.
When you converted your AutoCAD block into AutoCAD Electrical an intelligent symbol did you first explode it so that you could select the attributes in Symbol Builder?
When you name your blocks are you following the ACADE specific naming convention?
Where are you saving your new blocks? I hope it is not in the default library area as this could cause problems later on if you share symbols or upgrade your program.
Have you had any training to use ACADE?
I'd like to point out that "Electrical" has commands that should be used instead of the normal commands one associates with lain AutoCAD. The basis behind the program is a massive database that tracks all the components knowing where they are and what they are connected to and maintaining those relationships across a project. I believe that to use the program most effectively one should get some serious training ( 3-4 days worth ).