We're busy migrating some websites to a new environment, so also transfer the Virtual Hosts files. I see these lines in the Virtual Hosts files:
BrowserMatch "MSIE [2-6]" \
nokeepalive ssl-unclean-shutdown \
downgrade-1.0 force-response-1.0
BrowserMatch "MSIE [17-9]" ssl-unclean-shutdown
Should I keep them or is this obsolete?