My question is:
are there any specfic migration paths from ASA release 8.6 to 9.0
I have observed that no migration is done for the object ANY to ANY4
I have observerd that migration is done from ASA 8.4.6 to 9.0
To my understanding the 8.6 software level is basically the starting software level of the new ASA5500-X series
I guess you could consider 8.3 or 8.4 the first new softwares of the original ASA5500 series.
With that being said it would seem to me that if you have an ASA5500-X series device that there is not really any software jump you can do from 8.6 other than to 9.0 or 9.1 series software.
I have mostly switched between 8.x and 9.x software on my test ASAs and have not faced any problems so far.
It would seem strange to me that no ACL migration would be done from 8.6 to 9.0? The Release notes does suggest that this should happen. i do have a new ASA5515-X but havent had the time to test it much yet.
I have done an ASA 5585-x migration from 8.4.6 code to 9.0.2 with the migration for the ANY onject done automatically.
All new other X-Series ASAs start with 8.6