RTC Upgrade from v 1.0.1.1 to RTC 4.0.0.1
One answer
Please refer to the product help: http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0m1/topic/com.ibm.jazz.install.doc/topics/c_upgrade_overview.html. Run the interactive upgrade guide: http://pic.dhe.ibm.com/infocenter/clmhelp/v4r0m1/topic/com.ibm.jazz.install.doc/topics/roadmap_clm_upgrade.html .
To go from 2.x to 4.x please note:
Here is the description on how to upgrade from 1.x to 2.x: https://jazz.net/downloads/rational-team-concert/releases/2.0.0.2?p=upgrading
So, as far as I can tell, you have to upgrade from 1.x to 2.x and then to 3.x and then to 4.x.
To go from 2.x to 4.x please note:
Upgrading from V2 to V4: Upgrading from version 2 to version 4 is a two-step process. You must first upgrade your server to the latest fix pack of version 3.0.1, then upgrade to version 4.0.1. For instructions to upgrade from version 2 to version 3, see the 3.0.1 information center.From the documentation of RTC 3.0 I have to assume you have to be at 2.x to upgrade to 3.x: http://pic.dhe.ibm.com/infocenter/clmhelp/v3r0/topic/com.ibm.jazz.install.doc/topics/c_rtc_upgrade_overview.html
Here is the description on how to upgrade from 1.x to 2.x: https://jazz.net/downloads/rational-team-concert/releases/2.0.0.2?p=upgrading
So, as far as I can tell, you have to upgrade from 1.x to 2.x and then to 3.x and then to 4.x.