Hi Adiran,
please have a look at Upgrade Guide for wM 8.2.x.
This should answer most of your questions.
For EDIINT Fix12 you should have look at readme for this fix.
Additionally check the Built-In-Services Guides for EDI and EDIINT for changed or deprecated services.
If you want to be sure you can contact support by opening an incident in empower, but this requirees an active exntended maintnenance agreement for wM 8.2.
Additionall you should consider upgrading to the current wM 9.x stream.
Possible targets for upgrading from 8.2 are either 9.5 SP1 or 9.8.
From there you can migrate to latest wM 9.12.
These upgrades will b e side-by-side migrations as per the upgrade guides.
Regards,
Holger
#Integration-Server-and-ESB#webMethods-Upgrade#webMethods#webMethods-General