Do Orthodox Converts Have to Reject Their Religious Past?

I recently received an email from a Protestant who read Orthodoxy and Heterodoxy and was puzzled by some passages that were seen as being inherently contradictory. From the appendix “How and Why I Became an Orthodox Christian” (pp. 373-384): I am convinced that my life as a Christian before I discovered Orthodoxy was both real and fruitful. […] I had been in…