deepcopying cfgs

Author: kwolz

sotodlib/preprocess/processes.py

@@ -1138,8 +1138,8 @@ class SubtractAzSSTemplate(_Preprocess):
     name = "subtract_azss_template"
 
     def process(self, aman, proc_aman, sim=False):
-        process_cfgs = self.process_cfgs.copy()
-        if sim:    
+        process_cfgs = copy.deepcopy(self.process_cfgs)
+        if sim:
             process_cfgs["azss"] = proc_aman.get(process_cfgs["azss"])
         tod_ops.azss.subtract_azss_template(aman, **process_cfgs)