>>> This may be a stupid question and dont take it wrong,<<
>
>I once heard that the only stupid questions are those that are not asked.
>
>>> But are you dropping all your indexes before you clear the tables and re-add all the data.
> Then rebuild your indexes on the fresh data? <<
>
>Yes, but there's more:
>1. Build temp table from table definition
>2. Import new data provided from outside source
>3. Index (answering your question, yes, on fresh data)
>4. Rename old table
>5. Rename temp table to bring it "live"

Thanks for taking the question in the manner its was given. Sorry I could not help...