I am not involved in trading shares, just have some blue chip...

I am not involved in trading shares, just have some blue chip shares that look after themselves. Back in 2004 I lost a sum of money I invested into ECSI LTD after advise from a friend. When they got delisted I figured that was the end of it.
Looking on here, did they make a comeback around 2010 and now trading under something else.
As I moved house I did not receive any correspondence from them with information.
Did I lose those shares I had back in 2004 or what is the story?
Any help would be much appreciated.

Thanks