Understanding Auto Update Columns in Clay Tables

hey, if I have auto update colums enabled on a table, does that mean, that whenever new companies or leads match the source in imported companies or leads, they will be added to the table? and enriched? example: if I did a find companies search and imported it into a table in clay. 2 days later another company matches the same filter. will it be added to the table and enriched automatically? so in order to avoid hidden costs I must turn off auto update colums, right?