Coincidentally this is what I have had to test last night inorder to upgrade a
production environment PIX.
The PIX was configured with conduits and running the ver 5.2, the upgrade was
to ver 6.3 and migrating the conduits to ACL.
Because of the PIX Conduit and Outbound Feature Deprecation
http://cisco.com/en/US/products/sw/secursw/ps2120/products_field_notice09186a00801d3621.shtml
The configs for the 528 included conduits, and it appeared that the 634 PIXOS was backward compatible.
I can not confirm that conduits and ACL can co-exist within your particular
configuration (cisco doesn't recommend it), however it worked for me as I had the same ACL as conduits,
converted all at once by using the Cisco tool.
To convert the conduits into ACLs use the tool:
(https://www.cisco.com/cgi-bin/Support/OutputInterpreter/home.pl ).
If they are the same then the ACL take precedence. Once having that you can
remove the conduits from your configuration one by one, and do not forget to
enter these commands to clear the translation and arp tables:
clear xlate
clear arp
