Hi @nick ,
According to the [https://downloads.dell.com/manuals/all-products/esuprt_laptop/esuprt_latitude_laptop/latitude-e6220_owner%27s%20manual_en-us.pdf|service manual] (see p.106) it states for the BIOS > Wireless > Wireless Device Enable setting:
“Allows you to enable or disable the wireless devices.
Default Setting: All the options are selected”.
I was wondering if you disabled the BT in BIOS whether the “new” BT incorporated with the WLAN card would still work.
If it does it would save you having to remove the insitu module etc.
Worth a try maybe.