Syntax changes from 6.34 (2016) to 6.47.10 (2021) without report on what specific version the change happen:
/ip settings
from max-arp-entries
to max-neighbor-entries
/system leds
from setting
to settings
/tool sms
from interface
to port
/tool mac-server
from interface
to allowed-interface-list
/tool mac-server mac-winbox
from interface
to allowed-interface-list
/ip ipsec
from peer profile
to profile
/ip ipsec
from user settings
to settings
/system watchdog
from no-ping-delay
to ping-start-after-boot
8 changes on 5 years… really problematic!!!
I do not see any issue, like all the software on the world, something can change over time.