Having a Hard Time with a NAV TOC in an ePub Export

[CDesCDes]

Hi everyone! I'm relatively new to ePub-making so I'm sorry if this seems basic to you -- I have a print publication built in InDesign and am exporting it (via InDesign) to an ePub. Everything is looking pretty good BUT I want to include in my ePub NAV TOC the Paragraph Styles which indicate the Table of Contents, Table of Illustrations, and another Table that appear in the print-use file. I have made a specific ePub table of contents and everything else that I've put into the ePub file NAV TOC appears in the NAV TOC when I export it and read it on an e-reader. However, those particular paragraph styles (which only are used for the names of those sections in the InDesign file) do not appear in the exported ePub NAV TOC... I can't figure out what I'm doing wrong. Does anyone have any possible solution I should try? Many thanks in advance!