Your System Security Plan (SSP) and Plan of Actions and Milestones (POAM) are Necessary for DFARS Compliance.
According to the U.S. Department of Defense, “Plans of Action (and Milestones), continuous monitoring and the System Security Plan (NIST SP 800-171 Security Requirements 312.2-3.12.4)” must be used to address DFARS compliance. It's likely that your prime or the DoD itself will request your documents for new bids. They'll likely “incorporate the System Security Plan (SSP) and Plan of Action into the contract” itself.