Inactive Supplier site is not getting active through Supplier Site Import

Summary

We have 900 and plus supplier sites which have went to inactive status and now we want to make them active.

Content

We have 900 and plus supplier sites which have gone to inactive status and now we want to make them active.

We tried using the Supplier Site Import process and kept inactive date blank, but still, we are unable to make them active.

Any another process we should follow?

Any suggestions are welcome.

Reg,

Sanket S