@jauling_chou
1. If compatibility of latest ONTAP is the primary reason for upgrading WFA, then upgrading WFA is not required. You can just upgrade the DataONTAP PSTK on your existing WFA. It will work seamless. See here : How to upgrade or modify the DataONTAP Powershell Toolkit(PSTK) in WFA
2. You need not import the dar file. The code for trap is provided in .txt and also in the original post. This is a common trap code which can be used in any command.
3. If you look the trap code calls the REST API to clean up the reservation. Now we need to see if this API is working or not in WFA4.2.
sinhaa
If this post resolved your issue, help others by selecting ACCEPT AS SOLUTION or adding a KUDO.
