Hello Charly,
I ran a quick test on a local VMware Workstation (Pro 15.5.7 build 17171714), starting with IDM 14.4 on Wildfly 15.0.1 and migrating to Wildfly 23.0.2, on Windows Server 2016. I attached the console output to this post. The initial lines from running the tool copied below:
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E:\CA\Utilities\14.4_Symantec_Migration_Tool\IGA-jboss-wildfly-migration-tool>Symantec_migrate_tool.bat -s "E:\CA\wildfly-15.0.1.Final" -t "E:\CA\wildfly-23.0.2.Final"
Source Directory : E:\CA\wildfly-15.0.1.Final
Target Directory : E:\CA\wildfly-23.0.2.Final
Valid Source and Destination provided. Proceeding...
Please provide the Absolute Path of the migration tool to use:E:\CA\Utilities\jboss-server-migration
Migration tool exists..Proceeding with Migration
"checking IM version in "E:\CA\wildfly-15.0.1.Final\standalone\deployments\iam_im.ear\config\com\netegrity\config\product_versioninfo.properties"
"Version file exist"
1 file(s) copied.
Product to be migrated is : Identity Manager
Calling the jboss-server-migrate tool...
calling tool with E:\CA\wildfly-15.0.1.Final and E:\CA\wildfly-23.0.2.Final
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---- JBoss Server Migration Tool -----------------------
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Retrieving servers...
INFO SOURCE server name: WildFly Full, version: 15.0.1.Final.
INFO TARGET server name: WildFly Full, version: 23.0.2.Final.
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Server migration starting...
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I hope this helps. Reach out if ou have any questions on my test.
Take care.