Move EV partition & database

Our current EV partition / store is expanding and need to move it to a new storage device.

Based on the following article, we can only proceed to step 2 when the record count for Watchfile is zero. Under what circumstance the record count will become zero?

https://support.symantec.com/en_US/article.TECH35742.html

WeI have already copied the following folders from the existing SAN storage (H drive) to the new SAN storage (F drive).

DiscoverySearch, eDiscovery, Enterprise Valut Stores

Our plan is to swop the drive letters so that EV can continue with the partition & database that moved to F drive.

Please advise if we still can proceed to step 2 even if the record count for Watchfile is not zero.

Thanks