In PRINCE2, the 'Issue and Change Control' procedure encompasses the management of issues throughout the project lifecycle, including capturing, examining, and deciding on issues. Archiving superseded versions is part of the final step in the 'Deciding on changes' phase, where decisions are made on the issues and subsequent actions, including updates to project baselines and documentation, are implemented and archived as necessary.References: PRINCE2 7 Foundation handbook and official resources on issue management technique.

The 'learn from experience' principle in PRINCE2 is applied to ensure that lessons are sought, recorded, and acted upon throughout the life of the project. This principle helps the project team to replicate successes and avoid repeating past mistakes, thereby improving the efficiency and effectiveness of the project.
References: PRINCE2 Foundation Handbook, Learn from Experience section.

A risk budget should be used to implement contingency plans (2) and actions to avoid a risk from occurring (3). This budget is set aside to fund specific actions that are part of the project's risk management strategy, enabling proactive and reactive responses to identified risks, ensuring the project remains on track despite uncertainties.References: = PRINCE2 7 Foundation handbook and online resources