[Koha] Zebra reindexing

Hi there, I noticed in the OPAC (refine your search sidebar) that sometimes my series authorities (830 marc21 field) are displayed two times e.g. Short stories Short stories. When I search for this in staff client I only retrieve the one authority (which is correct). Is it dangerous to reindex my database using this command: sudo koha-rebuild-zebra -f -v instancename in order to see if this will solve the issue? Regards -- Sent from: http://koha.1045719.n5.nabble.com/Koha-general-f3047918.html