Worked on the BOINC/boinc repository to address a critical issue with MRU (Most Recently Used) computers state persistence and de-duplication in the BOINC Manager. Focused on configuration handling and GUI development using C++, the work involved preserving existing MRU entries when saving state and implementing deduplication logic during restoration. This approach ensured that users no longer experienced data loss or duplicate MRU entries across multiple manager windows, maintaining a stable and clean MRU list. The solution improved state management and preserved configuration integrity, reflecting a careful and targeted fix to a nuanced bug within a complex application environment.