ID:18628 Database export is not allowed for a netlist that has been imported using timing_analysis_mode. Run full compile before Database Export (quartus_cdb)

CAUSE: You ran the database export. However, the netlist had been generated from importing version compatible database using timing_analysis_mode. This mode had skipped important netlist checks. Run full compile before running database export.

ACTION: Successfully compile the design using current version of Quartus before running the database export.