It only conforms if you go back to HDV tape, and if your rendering is set to ProRes then you'll be working in a less compressed, I-Frame, 4:2:2 space so you're gfx, color fx, etc., will all look better than if you had the render engine set to HDV. Also, FC shouldn't "double dip" when it comes to renders/exports. FC should always goes back to the source media so that you avoid unnecessary compression.
Going to ProRes from the get go will obviously eliminate problems associated w/HDV, but if you don't have the time, budget or resources to make that happen then changing the render settings will get you most of the benefits of ProRes w/o costing you a dime.
Lethal
If you "render in ProRes," when you export, regardless of selected Quicktime format (HDV or ProRes), it writes the entire file again, even if you DE-selected "self contained" (that is, you want a reference movie), so you double your storage. If you want to use ProRes with HDV video, maybe the best work flow is to injest as HDV so you can log and capture, etc., then put that footage in a ProRes sequence. Then when you render, you will get the big ProRes files, but exporting to ProRes "reference" should get to a small export file with just the reference pointers.
But unless you have some particular need for Prores (compositing, complex effects, etc., better previews) there is not a good reason to use it. Rendering ProRes takes about the same time as conforming.
Note: there is a bug in 6.0.2 (can't confirm 6.0.3) which causes SOME HDV conformations (render) to produce very blocky video (like 16x16 blocks) which don't disappear on export. The only work around I've found is to...you guessed it...render in ProRes.
Eddie O