update NMEA PAIR poll handling

Author: semuadmin

src/pygpsclient/dynamic_config_frame.py

@@ -490,13 +490,13 @@ def update_status(self, msg: NMEAMessage | UBXMessage):
 
         # self.logger.debug(f"{msg.identity=}")
         ok = False
-        # strip off any variant suffix from cfg_id
-        # e.g. "QTMCFGUART_CURR" -> "PQTMCFGUART"
         if self._protocol == NMEA:
-            cfg_id = self._cfg_id.rsplit("_", 1)[0]
             # use alternate name for some NMEA PAIR/PQTM POLL commands
             # e.g. a PAIR864 (set baud rate) command corresponds to PAIR865 (poll baud rate)
-            cfg_id = "P" + ALT_POLL_NAMES.get(cfg_id, cfg_id)
+            cfg_id = ALT_POLL_NAMES.get(self._cfg_id, self._cfg_id)
+            # strip off any variant suffix from cfg_id
+            # e.g. "QTMCFGUART_CURR" -> "PQTMCFGUART"
+            cfg_id = "P" + cfg_id.rsplit("_", 1)[0]
         else:
             cfg_id = self._cfg_id