Ignore/Exclude file when using Export/Import-SPWeb

I'm using the Export-SPWeb and Import-SPWeb Cmdlets to migrate a few libraries between SharePoint servers. However, one of the files being migrated is a shared data source which is only valid on the source environment, not the target environment. I therefore need to exclude a single list item from the export/import process to avoid this environment conflict.

is there any way, using these cmdlets that I can do this, or do I need to try an alternate approach?

Thanks