protocol: set type of max_tx_fee after it’s set from cfg file

mmgen/protocol.py

@@ -113,15 +113,15 @@ class CoinProtocol(MMGenObject):
 				from .util2 import get_keccak
 				self.keccak_256 = get_keccak(cfg)
 
-			if need_amt and self.coin_amt:
+			self.set_cfg_opts()            # a) could reset max_tx_fee
+
+			if need_amt and self.coin_amt: # b) set type of max_tx_fee _after_ possible reset
 				from . import amt
 				from decimal import getcontext
 				self.coin_amt = getattr(amt, self.coin_amt)
 				self.max_tx_fee = self.coin_amt(str(self.max_tx_fee)) if self.max_tx_fee else None
 				getcontext().prec = self.decimal_prec
 
-			self.set_cfg_opts()
-
 		def set_cfg_opts(self):
 			pass
 

test/cmdtest_d/include/group_mgr.py

@@ -148,7 +148,8 @@ class CmdGroupMgr:
 		return cls
 
 	def gm_init_group(self, cfg, trunner, gname, sg_name, spawn_prog):
-		write_to_cfgfile([])
+		if not (cfg.resuming or cfg.skipping_deps):
+			write_to_cfgfile([])
 		cls = self.create_group(gname, sg_name, **self.cmd_groups[gname].params)
 		cls.group_name = gname
 		return cls(cfg, trunner, cfgs, spawn_prog)