does future updates revert .htaccess in root directory?

[mending3 0]

I modified .htaccess in root directory.
if future updates reverts it, what's the best practice to modify the .htaccess so that future updates won't revert it?

[DennisHermannsen 109]

Updates won't make changes to anything but the WHMCS stuff.
Everything that's in between the following lines could be changed:
 

### BEGIN - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###

...

### END - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###

Everything outside of that block won't be changed by updates to WHMCS.