Are you replicating to the same shares:

Example:

Source: {share name} Data to Destination: {share name} Data

Then >

Destination: {share name} Data to Source: {share name} Data

If so we do not recommend this. We recommend the following.

Example:

Source: {share name} Data to Destination: {share name} Data

Then >

Destination: {share name} Data to Source: {share name} Data01

In this case you will not overwrite the data if changes on Destination.