Bhool Bhulaiya was a hit all ovr india and abroad. Bhool Bhulaiya is not a direct scene by scene copy of chandramukhi, it ws scene by scene copy of the original in malayalam.
Krrishh, P.Vasu did the first remake of malayalam film to kannada and latr adaptd the same style tht ws in kannada to tamil. Also, P.Vasu is a malayalee born tamil director, and he alwsy loves to remake malayalam films i.e muthu and chandramukhi.
The dirctor of malayalam film loved chandramukhi since it ws really good technically. But bhool bhulaiya ws nowere near chandramukhi in terms of technicality and nower near the malayalam film in terms of narrating the story and acting.
I have watched all versions of the malayalam original, and although i am tamil film fan mor thn malayalm films. I like the malayalam the best and also chandramukhi equally.