Upgrade StorageFR: keep fields information when swicthcing item type
Currently, when an item type is changed, some fields may be lost as the following message tells:
```
Are you sure you want to change the item type?
The following fields will be lost:
...
```
Ideally, instead of losing the fields, what Zotero would do would be to keep this information in the Extra field.
And reciprocally, if, when the item type is changed a new field is present for which there is information in the Extra field , then it would move from Extra to it. For example, let's say Publisher field inside Extra field for a journal article. And I update the item type to Book. Then the Publisher information would be kept in the Publisher field, instead of the Extra field
```
Are you sure you want to change the item type?
The following fields will be lost:
...
```
Ideally, instead of losing the fields, what Zotero would do would be to keep this information in the Extra field.
And reciprocally, if, when the item type is changed a new field is present for which there is information in the Extra field , then it would move from Extra to it. For example, let's say Publisher field inside Extra field for a journal article. And I update the item type to Book. Then the Publisher information would be kept in the Publisher field, instead of the Extra field
-
till.grallertI second this suggestion. Losing information by changing item type never seemed like a good decision.