User's Guide > About the User's Guide > Codebeamer: Common Concepts > Trackers > Editing Issues > Field Mapping for Copy/Move Between Trackers
Field Mapping for Copy/Move Between Trackers
When you copy or move items from one tracker to another, it may happen that the source and target tracker are of different types or different fields.
The copy or move operation tries to resolve the field mapping between trackers automatically by finding the matching trackers. The rules are:
The source and target fields are matched if they have same label and same type. For example, the source may contain a Pre-Action wiki field that is automatically mapped to the Pre-Action wiki field in the target tracker. However this mapping does not occur if their types are different such as if the source field is a reference field but the target field is a wiki.
Alternatively, the target tracker contains a field which is configured similar to the Shared Field and hence also has the same type as the source field. Hence the value is copied into the matching shared field.
If there are some fields that cannot be mapped automatically, then users can do this mapping in the dialog box as shown in the following image:
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