Clean URLs .htaccess HELP

Hi there,

Was hoping if anyone could help me here. I have just launched a new Perch site from Perch to Perch Runway.

The original blog was set up like this

domain.com/post.php?s=2016-04-19-post-title

So now for the new blog on Perch Runway the set up is the following

domain.com/news/2016-04-19-post-title

My .htaccess is following (please ignore all the 301 redirects)

<IfModule mod_rewrite.c>
    RewriteEngine On
    # Remove www. from subdomains

    RewriteCond %{HTTP_HOST} ^www\.extract-technology\.com$ [NC]
    RewriteRule ^(.*)$ https://extract-technology.com/$1 [R=301,L]
</IfModule>

RewriteRule ^news/([a-zA-Z0-9-/]+)$ /post.php?s=$1 [L]

Redirect 301 /about/containment-systems/downflow-booths https://extract-technology.com/products/containment-solutions/downflow-booths
Redirect 301 /who-we-are/ https://extract-technology.com/about/
Redirect 301 /what-we-do/containment-systems/ https://extract-technology.com/products/containment-solutions/
Redirect 301 /careers https://extract-technology.com/contact/careers/
Redirect 301 /what-we-do/aseptic-systems/ https://extract-technology.com/products/aseptic-solutions/
Redirect 301 /about/meet-the-team/alan-wainwright https://extract-technology.com/about/meet-the-team/
Redirect 301 /what-we-do/containment-strategy https://extract-technology.com/services/containment-strategy/
Redirect 301 /about/meet-the-team/paul-hudson https://extract-technology.com/about/meet-the-team/
Redirect 301 /downloads https://extract-technology.com/
Redirect 301 /what-we-do/containment-systems/high-containment-screen https://extract-technology.com/products/containment-solutions/
Redirect 301 /what-we-do/aseptic-systems/ https://extract-technology.com/products/aseptic-solutions/
Redirect 301 /what-we-do/standard-systems/ https://extract-technology.com/products/standard-solutions/
Redirect 301 /videos https://extract-technology.com/news/category/videos
Redirect 301 /about/meet-the-team/jason-armitage https://extract-technology.com/about/meet-the-team/
Redirect 301 /where-we-work/ https://extract-technology.com/contact/global-reach/
Redirect 301 /where-we-work/asia https://extract-technology.com/contact/global-reach/asia/
Redirect 301 /where-we-work/australia https://extract-technology.com/contact/global-reach/australasia/
Redirect 301 /where-we-work/russia https://extract-technology.com/contact/global-reach/russia/
Redirect 301 /where-we-work/europe https://extract-technology.com/contact/global-reach/
Redirect 301 /where-we-work/middle-east https://extract-technology.com/contact/global-reach/middle-east/
Redirect 301 /where-we-work/africa https://extract-technology.com/contact/global-reach/africa/
Redirect 301 /where-we-work/south-america https://extract-technology.com/contact/global-reach/south-america/
Redirect 301 /where-we-work/central-america https://extract-technology.com/contact/global-reach/central-america/
Redirect 301 /where-we-work/north-america https://extract-technology.com/contact/global-reach/north-america/
Redirect 301 /contact/global-reach/international-approach https://extract-technology.com/contact/global-reach/
Redirect 301 /contact/global-reach/offices https://extract-technology.com/contact/contact-us/
Redirect 301 /news.php https://extract-technology.com/news/
Redirect 301 /about/news/ https://extract-technology.com/news/
Redirect 301 /what-we-do/after-market/ https://extract-technology.com/services/relocations-upgrades/
Redirect 301 /what-we-do/ https://extract-technology.com/services/
Redirect 301 /firm-extracts-best-using-technology https://extract-technology.com/products/
Redirect 301 /about/key-facts-figures https://extract-technology.com/about/history/
Redirect 301 /clients https://extract-technology.com/about/clients/
Redirect 301 /about/core-values https://extract-technology.com/about/vision/
Redirect 301 /services/facilities https://extract-technology.com/products/containment-solutions/facilities
Redirect 301 /newsletters https://extract-technology.com/
Redirect 301 /about/reputation https://extract-technology.com/about/clients/
Redirect 301 /contact/global-reach/australia https://extract-technology.com/contact/global-reach/australasia/
Redirect 301 /about/mission https://extract-technology.com/about/
Redirect 301 /archive.php https://extract-technology.com/news/archive/
Redirect 301 /contact/global-reach/europe https://extract-technology.com/contact/global-reach/
Redirect 301 /services/relocations-upgrades/spare-parts https://extract-technology.com/products/spare-parts/
Redirect 301 /about/welcome-message https://extract-technology.com/about/
Redirect 301 /turn-key-finishing-area-facility https://extract-technology.com/products/
Redirect 301 /what-we-do/after-market/servicing https://extract-technology.com/services/relocations-upgrades/
Redirect 301 /pl/standard-containment-isolator https://extract-technology.com/pl/standardowy-izolator-sterylny/
Redirect 301 /fr/standard-containment-isolator https://extract-technology.com/fr/isolateur-de-confinement-standard/
Redirect 301 /pl/mobile-automated-glove-tester https://extract-technology.com/pl/zautomatyzowany-mobilny-tester-rekawic/
Redirect 301 /pl/standard-aseptic-isolator https://extract-technology.com/pl/standardowy-izolator-ograniczajacy-rozprzestrzenianie/
Redirect 301 /es/standard-containment-isolator https://extract-technology.com/es/aislador-de-contencin-estndar/
Redirect 301 /containment-systems https://extract-technology.com/products/containment-solutions/
Redirect 301 /containment_isolators.php https://extract-technology.com/products/containment-solutions/containment-isolators
Redirect 301 /what-we-do https://extract-technology.com/services/
Redirect 301 /products/containment-solutions/downflow-booths.php https://extract-technology.com/products/containment-solutions/downflow-booths
Redirect 301 /news/2014-05-23-active-restricted-access-barrier-system-for-autoclave-unloading-+-can-filling https://extract-technology.com/news/2014-05-23-active-restricted-access-barrier-system-for-autoclave-unloading-can-filling
Redirect 301 /contact-us https://extract-technology.com/contact/contact-us/

# Perch Runway
RewriteEngine On
RewriteCond %{REQUEST_URI} !^/admin
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule .* /admin/core/runway/start.php [L]

Anyone every faced this issue? I have tried the rule RewriteRule ^news/([a-zA-Z0-9-/]+)$ /post.php?s=$1 [L] as you can see above but it didnt work for me.

Thanks