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The FY21 O-4 board precept indicates otherwise. Specific language:
CW: "All fully qualified CW lieutenant commanders must be qualified CW officers, have earned their Information Warfare Officer (IWO) warfare qualification, and have a successful track record in their previous community
or in tactical CW officer assignments to indicate potential to succeed as a CW lieutenant commander."
IP: "For promotion eligibility purposes, some of these officers will not have completed the IP-specific community/operational leadership assignments prior to redesignation. As such, the board is encouraged to evaluate an officer's demonstrated sustained superior performance..."
Intel: "Some officers will have a mix of assignments in both the Intel Community and another Navy community prior to redesignation... both are equally valuable and board members are encouraged to examine an officer's entire record..."