[Koha] Thanks & question re: special character

Hello, First I would like to say thanks to Savitra and Greg for responding to my question this week about relevance ranking. Savitra's suggestion to disable sys pref QueryAutoTruncate made a big difference. Search results are much better since I followed that advice! Here is something I just now (!) came across. I have 919 records with ampersands that render in HTML code, "&". Does this require that I fix all 919 records or is there an easier database-level solution? I really cannot believe I did not notice this before now : / My tech support specialist wonders whether it is a reserved character in Koha, but I do not know. Thanks!