The replacement rules give you the ability to manipulate your data as you like during import and export. Out of the box RO CSVI comes with multiple rules but since this is plugin based you can create as many rules as you like. The rules can also be combined making an even more flexible import and export.
RO CSVI comes with the following replacement rules:
Replace values based on a given condition
Combine fields together into another field
Copy the content of one field to another field
Perform calculations on fields
Peform a number of operations on a field in a single step
Skip fields based on a given condition
Advanced import and export
By using the replacement rules you get a lot of control over how data is imported or exported. This allows you to import a variety of different files and still get all the data you need into your site. The other way around, when creating an export, you can create any kind of file with the data you need.