A masternode (-masternodeblsprivkey) now refuses to start unless:
-blocksonly=0-peerblockfilters=1-maxuploadtarget=0-minrelaytxfee,-incrementalrelayfee,-dustrelayfeeand-bytespersigopare not above their defaults-datacarrier=1,-datacarriersizeis not below its default and-permitbaremultisig=1-limitancestorcount,-limitancestorsize,-limitdescendantcount,-limitdescendantsize,-maxmempooland-mempoolexpiryare not below their defaults
The relay policy checks do not apply on regtest.