My old .htaccess (the one that works) is as follows:
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# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^.*$ – [S=50]
RewriteRule ^(contact-us)/trackback/?$ /index.php?pagename=$1&tb=1 [QSA,L]
RewriteRule ^(contact-us)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(contact-us)/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(contact-us)/page/?([0-9]{1,})/?$ /index.php?pagename=$1&paged=$2 [QSA,L]
RewriteRule ^(contact-us)(/[0-9]+)?/?$ /index.php?pagename=$1&page=$2 [QSA,L]
RewriteRule ^(about-us)/trackback/?$ /index.php?pagename=$1&tb=1 [QSA,L]
RewriteRule ^(about-us)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(about-us)/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(about-us)/page/?([0-9]{1,})/?$ /index.php?pagename=$1&paged=$2 [QSA,L]
RewriteRule ^(about-us)(/[0-9]+)?/?$ /index.php?pagename=$1&page=$2 [QSA,L]
RewriteRule ^(about_short)/trackback/?$ /index.php?pagename=$1&tb=1 [QSA,L]
RewriteRule ^(about_short)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(about_short)/(feed|rdf|rss|rss2|atom)/?$ /index.php?pagename=$1&feed=$2 [QSA,L]
RewriteRule ^(about_short)/page/?([0-9]{1,})/?$ /index.php?pagename=$1&paged=$2 [QSA,L]
RewriteRule ^(about_short)(/[0-9]+)?/?$ /index.php?pagename=$1&page=$2 [QSA,L]
RewriteRule ^feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?&feed=$1 [QSA,L]
RewriteRule ^(feed|rdf|rss|rss2|atom)/?$ /index.php?&feed=$1 [QSA,L]
RewriteRule ^page/?([0-9]{1,})/?$ /index.php?&paged=$1 [QSA,L]
RewriteRule ^comments/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?&feed=$1&withcomments=1 [QSA,L]
RewriteRule ^comments/(feed|rdf|rss|rss2|atom)/?$ /index.php?&feed=$1&withcomments=1 [QSA,L]
RewriteRule ^comments/page/?([0-9]{1,})/?$ /index.php?&paged=$1 [QSA,L]
RewriteRule ^search/(.+)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?s=$1&feed=$2 [QSA,L]
RewriteRule ^search/(.+)/(feed|rdf|rss|rss2|atom)/?$ /index.php?s=$1&feed=$2 [QSA,L]
RewriteRule ^search/(.+)/page/?([0-9]{1,})/?$ /index.php?s=$1&paged=$2 [QSA,L]
RewriteRule ^search/(.+)/?$ /index.php?s=$1 [QSA,L]
RewriteRule ^category/(.+)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?category_name=$1&feed=$2 [QSA,L]
RewriteRule ^category/(.+)/(feed|rdf|rss|rss2|atom)/?$ /index.php?category_name=$1&feed=$2 [QSA,L]
RewriteRule ^category/(.+)/page/?([0-9]{1,})/?$ /index.php?category_name=$1&paged=$2 [QSA,L]
RewriteRule ^category/(.+)/?$ /index.php?category_name=$1 [QSA,L]
RewriteRule ^author/([^/]+)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?author_name=$1&feed=$2 [QSA,L]
RewriteRule ^author/([^/]+)/(feed|rdf|rss|rss2|atom)/?$ /index.php?author_name=$1&feed=$2 [QSA,L]
RewriteRule ^author/([^/]+)/page/?([0-9]{1,})/?$ /index.php?author_name=$1&paged=$2 [QSA,L]
RewriteRule ^author/([^/]+)/?$ /index.php?author_name=$1 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&day=$3&feed=$4 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&day=$3&feed=$4 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/page/?([0-9]{1,})/?$ /index.php?year=$1&monthnum=$2&day=$3&paged=$4 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/?$ /index.php?year=$1&monthnum=$2&day=$3 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&feed=$3 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&feed=$3 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/page/?([0-9]{1,})/?$ /index.php?year=$1&monthnum=$2&paged=$3 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/?$ /index.php?year=$1&monthnum=$2 [QSA,L]
RewriteRule ^([0-9]{4})/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&feed=$2 [QSA,L]
RewriteRule ^([0-9]{4})/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&feed=$2 [QSA,L]
RewriteRule ^([0-9]{4})/page/?([0-9]{1,})/?$ /index.php?year=$1&paged=$2 [QSA,L]
RewriteRule ^([0-9]{4})/?$ /index.php?year=$1 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)/trackback/?$ /index.php?year=$1&monthnum=$2&day=$3&name=$4&tb=1 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)/feed/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&day=$3&name=$4&feed=$5 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)/(feed|rdf|rss|rss2|atom)/?$ /index.php?year=$1&monthnum=$2&day=$3&name=$4&feed=$5 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)/page/?([0-9]{1,})/?$ /index.php?year=$1&monthnum=$2&day=$3&name=$4&paged=$5 [QSA,L]
RewriteRule ^([0-9]{4})/([0-9]{1,2})/([0-9]{1,2})/([^/]+)(/[0-9]+)?/?$ /index.php?year=$1&monthnum=$2&day=$3&name=$4&page=$5 [QSA,L]
RewriteRule ^podcast/(atom|rss2)/?$ /index.php?feed=$1&category_name=podcast [QSA,L]
</IfModule>
# END WordPress
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Thanks for any help you all can give!