We are using the field "Affect Versions" to record which versions are affected by bugs. This includes the version where it was initially raised but also more recent versions, so that we record if the bug is still current or not. I.e. we end up recording several version numbers in this field. Sounds like we are using this field as it is meant to be used, given that it is named versions - not version.
However, we can't use this information to produce stats such as "was first raised in version". Such stats would help us understand if our versions add more bugs to the backlog.
We could of course create a new custom field to capture this information, but this results in double entry.
Any suggestion?