No attachment of any interest in real estate shall be defeated by any change in the nature of the debtor's right thereto, as by redemption of a mortgage or other encumbrance or the execution to the debtor of any conveyance pursuant to a contract, but the whole interest of the debtor, upon such change, shall be held by the attachment.
RSA 511:17
RS 184:10. CS 195:12. GS 205:12. GL 224:12. PS 220:12. PL 332 :17. RL 388:17.