Editing Manual/Importing XML dumps (section)

=== Merging histories, revision conflict, edit summaries, and other complications === <!--T:15-->
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<translate><!--T:145--> When importing a page with history information, if the user name already exists in the target project, change the user name in the XML file to avoid confusion.</translate> 
<translate><!--T:146--> If the user name is new to the target project, the contributions will still be available, but no account will be created automatically.</translate>

<translate><!--T:147--> When a page is referenced through a link or a URL, generic namespace names are converted automatically.</translate> 
<translate><!--T:148--> If the prefix is not a recognized namespace name, the page will default to the main namespace.</translate> 
<translate><!--T:149--> However, prefixes like <tvar name=1><code>mw:</code></tvar> might be ignored on projects that use them for interwiki linking.</translate> 
<translate><!--T:150--> In such cases, it might be beneficial to change the prefix to "Project:" in the XML file before importing.</translate>

<translate><!--T:151--> If a page with the same name already exists, importing revisions will combine their histories.</translate>
<translate><!--T:152--> Adding a revision between two existing ones can make the next user's changes appear different.</translate>
<translate><!--T:153--> To see the actual change, compare the two original revisions, not the inserted one.</translate>
<translate><!--T:154--> So, only insert revisions to properly rebuild the page history.</translate>

<translate><!--T:155--> A revision won't be imported if there's already a revision with the same date and time.</translate>
<translate><!--T:156--> This usually happens if it's been imported before, either to the current, a previous wiki, or both, possibly from a third site.</translate>

<translate><!--T:157--> An edit summary might reference or link to another page, which can be confusing if the page being linked to has not been imported, even though the referencing page has been.</translate>

<translate><!--T:158--> The edit summary doesn't automatically indicate whether the page has been imported, but in the case of an upload import, you can add this information to the edit summaries in the XML file before the import.</translate> 
<translate><!--T:159--> This can help prevent confusion. When modifying the XML file with find/replace, keep in mind that adding text to the edit summaries requires differentiating between edits with and without an edit summary.</translate> 
<translate><!--T:160--> If there are multiple comment tags in the XML file, only the last set will be applied.</translate>

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