strategy parameters not available after converting the file via shifter

I`m facing an issue at the time of converting template to helm .

Issue: shifter is not taking care the "strategy" .

I`m sharing the strategy parameters from source-file and output-file

strategy parameters from source file:

strategy:
activeDeadlineSeconds:
resources: {}
rollingParams:
intervalSeconds:
maxSurge: %
maxUnavailable: %
timeoutSeconds:
updatePeriodSeconds:
type:

strategy parameters from output file:

strategy: {}

Please help to fix this issue or suggest for taking care it.

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Regards,
Himanshu Gaur