Splunk Add-on for AWS ARN Format Mismatch

[tkw03]

Hello

In setting up the add on for AWS(4.6.1) in the IAM role setup it expects a role ARNin the format of :

arn:aws-us-gov:iam::12345566789:role/XXX_GuardDuty_S3_XXX

 But the ARN I got from AWS is formatted like this:
arn:aws-us-gov.iam:12345566789:role/XXX_GuardDuty_S3_XXX

Notice the difference between "gov.iam" to "gov:iam" and "iam:123" to "iam::123"

I had to change the ARN to be able to get the selection added into the app BUT I assume it wont work since the ARN isnt correct since the format isnt right.

Any ideas on how to work around it?