namaskaram viraja ji :namaste
this is a wise decision we should treat our guru or acharya as the one capable to prescribe the correct practice for us , .... but I do not think that we should mistake that instruction that is prescribed for us as individuals to be an instruction in general for everyone . there is no need for anyone to assert the supremacy of one practice above another or ones god or gods above those of another tradition .
personaly I would not go as far as to refuse the prasad , blesings or darshan of anothers divinity , but I can understand how these beleifs have come about ,
go back many hundreds of years and each of us would be born into a tradition and would maintain that tradition as it would have been our dharma to do so , our 'prescribed duty' by dint of birth .
but now the world has changed no longer do most people stay in the village of their birth , no longer do people continue in ones familys tradition with a ridgid set of family and cultural ties , ..... this world has changed , we now need to be very wise in making the correct decisions as to what to continue and where we can bring in new flexability , we must realise that whatever we bring in to our traditions from outside only serves to confuse and weaken any one tradition .
so if ones guru or acharya says dont do something we need to seek to understand his reasoning .
it is not because that other tradition is wrong or inferior it is simply to focus our practice in one place , it is to strenghten our sadhana .
because of my buddhist background I came to vaisnavism with the previous blessing of budhist teachings and realisations , I can no more forget any true realisation than I can undo my age , gender or birth yet it is not wise for me to continualy site buddhist instructions as it would simply confuse most hindus yet I can and do use the occasional comparison when it is realy nececary , as what buddha taught was in responce to a different age and different circumstances .
however once our temple president decided to take it upon himself to tell me that now I an in this tradition I can forget all about buddha as krsna is vastly superior ...to be truthfull I simply smiled and remained silent , How can I ever forget that which has given me great benifit ?
...it would be like a child forgetting the kindness of its mother .
the thing for me that canot be denied is that without my previous buddhist understanding I would not have understood the sadhana I now keep so well , but never would I try to mix the two this would be inapropriate .