Advanced Filter is Erasing My Other Data!

I have a range that I am trying to populate with data from a separate sheet (via a macro) using advanced filter. There are totals and also other data below this range.
The macro first evaluates how many rows of data will be retrieved, and the inserts (or deletes) rows within the target range, so it is just the right size for the advanced-filtered data.
Problem: When the advanced filter (using xlFilterCopy) writes in the data, it also ERASES everything in the worksheet BELOW the data!

For example, headings are on row 5, and I'm pulling in 20 rows of data. Totals and other data are in rows 27 and beyond (let's say rows 27-50). Running the advanced filter pastes in the data in rows 6-25 as expected, but ALL of my data in rows 27-50 is GONE.

What is going on?!? I see nothing in any documentation on advanced filter stating that it erases data outside of its target range!

The filter type (xlFilterCopy) implies that the data is first filtered, and then the results are copied (and pasted). But apparently it would more correctly be called xlCopyFilter, as I'm guessing it first copies the ENTIRE set of source data into my target sheet, and THEN filters it. It would be REALLY NICE if the documentation would make this clear (or even mention it at all)!!! But instead, the documentation for the xlFilterAction enumeration for xlFilterCopy says "Copy filtered data to new location". This description is misleading and, I would argue, apparently incorrect.

Ah, so that is the problem! Yes, I was only specifying the top (header) range as the CopyToRange. I will try it with specifying the entire range.