# Upgrade to rc5 deleted Modbus address mappings

**URL:** <https://forum.inductiveautomation.com/t/upgrade-to-rc5-deleted-modbus-address-mappings/6591>\
**Category:** Ignition\
**Created:** [May 27, 2013, 12:23pm UTC](https://forum.inductiveautomation.com/t/upgrade-to-rc5-deleted-modbus-address-mappings/6591 "2013-05-27T12:23:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![gadgetguru69](https://avatars.discourse-cdn.com/v4/letter/g/e274bd/32.png) [@gadgetguru69](https://forum.inductiveautomation.com/u/gadgetguru69)\
**Post date:** [May 27, 2013, 12:23pm UTC](https://forum.inductiveautomation.com/t/upgrade-to-rc5-deleted-modbus-address-mappings/6591/1 "2013-05-27T12:23:23Z")

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Just a note this weekend when we upgraded to rc5 for some reason it deleted all of our Modbus devices address mappings. It has not done this before during any other 7.6 rc updates.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [May 28, 2013, 3:32pm UTC](https://forum.inductiveautomation.com/t/upgrade-to-rc5-deleted-modbus-address-mappings/6591/2 "2013-05-28T15:32:33Z")

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Can you post or email to support a couple of your mappings? I’m not able to reproduce this behavior with rc5.

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**Author:** ![gadgetguru69](https://avatars.discourse-cdn.com/v4/letter/g/e274bd/32.png) [@gadgetguru69](https://forum.inductiveautomation.com/u/gadgetguru69)\
**Post date:** [May 28, 2013, 3:37pm UTC](https://forum.inductiveautomation.com/t/upgrade-to-rc5-deleted-modbus-address-mappings/6591/3 "2013-05-28T15:37:11Z")

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Here is the one it deleted.  
[modbus-config.csv](https://us1.discourse-cdn.com/inductiveautomation/original/2X/d/d00ee95a26a48dc18f87b7fbffc5d7d65147670f.csv) (1.97 KB)