[otrs] change from runtimedb to staticdb

Hello, i wanted to switch from runtimedb to staticdb today for "core::ticket::indexmodule" on otrs 3.0.9. Changed the value in otrs gui to staticdb, then ran the otrs.rebuildticketindex.pl script. script fails almost immediately with: message - no such ticketid (72145) has anyone come across this and knows a simple fix? ive reverted back to runtimedb for now and run the cleanup script to avoid conflicts. any help appreciated. Neil