How to migrate nif flowfile from 1.12 version to 1.16.3

I have a dataflow running in NiFi 1.12.0, the relevant properties from this installation is here:

nifi.sensitive.props.key=
nifi.sensitive.props.key.protected=
nifi.sensitive.props.algorithm=PBEWITHMD5AND256BITAES-CBC-OPENSSL
nifi.sensitive.props.provider=BC
nifi.sensitive.props.additional.keys=

I am facing migration issue in nifi when I upgrade base version to 1.16.3 from 1.12.0. which having following properties.

nifi.sensitive.props.key=testPassword
nifi.sensitive.props.key.protected=
nifi.sensitive.props.algorithm=NIFI_ARGON2_AES_GCM_256
nifi.sensitive.props.provider=BC
nifi.sensitive.props.additional.keys=

I am getting following exception while I execute command for migrating flow file.

nifi@nifi-service-0:/opt/nifi/nifi-toolkit-current/bin$ ./encrypt-config.sh -n $NIFI_HOME/conf/nifi.properties  -f /opt/nifi/data/old_flow.xml.gz -s testPassword -x
[main] WARN org.apache.nifi.properties.ConfigEncryptionTool - The source nifi.properties and destination nifi.properties are identical [/opt/nifi/nifi-current/conf/nifi.properties] so the original will be overwritten
[main] WARN org.apache.nifi.properties.ConfigEncryptionTool - The source flow.xml.gz and destination flow.xml.gz are identical [/opt/nifi/data/old_flow.xml.gz] so the original will be overwritten
[main] WARN org.apache.nifi.properties.AbstractBootstrapPropertiesLoader - System Property [nifi.properties.file.path] not found: Using Relative Path [conf/nifi.properties]
[main] INFO org.apache.nifi.properties.NiFiPropertiesLoader - Loading Application Properties [/opt/nifi/nifi-current/conf/nifi.properties]
[main] INFO org.apache.nifi.properties.NiFiPropertiesLoader - Loading Application Properties [/opt/nifi/nifi-current/conf/nifi.properties]
[main] INFO org.apache.nifi.properties.ConfigEncryptionTool - Loaded NiFiProperties instance with 138 properties
[main] INFO org.apache.nifi.properties.NiFiPropertiesLoader - Loading Application Properties [/opt/nifi/nifi-current/conf/nifi.properties]
[main] INFO org.apache.nifi.properties.ConfigEncryptionTool - Migrating flow.xml file at /opt/nifi/data/old_flow.xml.gz. This could take a while if the flow XML is very large.
[main] ERROR org.apache.nifi.properties.ConfigEncryptionTool - Encountered an error: Decryption Failed with Algorithm [AES/GCM/NoPadding]
Encountered an error migrating flow content



usage: org.apache.nifi.properties.ConfigEncryptionTool [-h] [-v] [-n <file>] [-o <file>] [-l <file>] [-i <file>] [-a <file>] [-u <file>] [-f <file>] [-g <file>]
       [-b <file>] [-S <protectionScheme>] [-k <keyhex>] [-e <keyhex>] [-H <protectionScheme>] [-p <password>] [-w <password>] [-r] [-m] [-x] [-s
       <password|keyhex>] [-A <algorithm>] [-P <algorithm>] [-c]



This tool reads from a nifi.properties and/or login-identity-providers.xml file with plain sensitive configuration values, prompts the user for a root key, and
encrypts each value. It will replace the plain value with the protected value in the same file (or write to a new file if specified). It can also be used to
migrate already-encrypted values in those files or in flow.xml.gz to be encrypted with a new key.

Please help to solve this issue

Solved by myself.

Issue can be resolved by following steps

1. Before migration if you don't have nifi.sensitive.props.key set, set it using following command ${NIFI_TOOLKIT_PAT}/bin/encrypt-config.sh -f /opt/nifi/nifi-current/data/flow.xml.gz -p ${NIFI_HOME}/conf/nifi.properties -s <NEW_KEY_TO_SET> -x
2. Once key is set upgrade nifi. Since in newer version algorithm is changed set it using command ${NIFI_HOME}/bin/nifi.sh set-sensitive-properties-algorithm <NEW_ALGORITHM>
3. Once algorithm set, encrypt again using command ${NIFI_TOOLKIT_PAT}/bin/encrypt-config.sh -f /opt/nifi/nifi-current/data/flow.xml.gz -p ${NIFI_HOME}/conf/nifi.properties -s <NEW_KEY_TO_SET> -x

Now you will get all compatible files with respect your latest version