# Historical data migration

**URL:** <https://forum.inductiveautomation.com/t/historical-data-migration/24424>\
**Category:** Ignition\
**Created:** [April 26, 2019, 5:50pm UTC](https://forum.inductiveautomation.com/t/historical-data-migration/24424 "2019-04-26T17:50:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![shibubalaji](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/shibubalaji/32/9165_2.png) [@shibubalaji](https://forum.inductiveautomation.com/u/shibubalaji)\
**Post date:** [April 26, 2019, 5:50pm UTC](https://forum.inductiveautomation.com/t/historical-data-migration/24424/1 "2019-04-26T17:50:27Z")

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I switched my ignition Data server to new machine and migrated all the data from MYSQL database to the new server. But , when I am trying to access this historian through Ignition Trend , it is not fetching the data from database, Where I can see only current historian data.  
After data importing to new server, is there anything else to be done in order to view those old data through ignition Chart mode/Historical trend mode.?  
I can see the data tables are copied into new server through MYSQL workbench, but not able to fetch those through SCADA trend. Any idea what could be wrong?

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [April 29, 2019, 5:39pm UTC](https://forum.inductiveautomation.com/t/historical-data-migration/24424/2 "2019-04-29T17:39:25Z")

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History migration is a complicated subject, fraught with potential problems. Your best bet is contacting support so someone can troubleshoot ‘live’ - the number of possible problems could take weeks to work out via forum.