Conversion and Christianity

Are propagation and conversion part of Christianity? Even though the Supreme Court's judgment in the Rev.Stainslaus case laid down that Article 25 does not include the right to convert, it appeared to me after reading Seervai, that the Orissa High Court judgment upholding conversion as part of Christianity, which was challenged in Stainslaus, is still the valid law, as Stainslaus did not specifically address the issue. Here is my article on the issue.