revert to

phrasal verb
1
to return to the original owner again
بازگشت کردن به
see also reversion
2
to return to a former state; to start doing something again that you used to do in the past
بازگشتن به, برگشتن به, بازگشتن به حالت قبلی, بازگشت به حالت قبلی, برگشت به وضعیت پیشین
After her divorce she reverted to her maiden name.
His manner seems to have reverted to normal.
Try not to revert to your old eating habits.
For a while the children behaved well but they soon reverted to type.
3
to return to an earlier topic or subject
بازگشت به موضوع پیشین, بازگرداندن به موضوع قبلی, بازآوردن موضوع پیشین
So, to revert to your earlier question…
The conversation kept reverting to the events of March 6th.