Error while merge changes from mainline(7.23.8) to branchline(9.12.4)

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Hi Team, Currently we are working on mendix modular upgrade activity. Our mainline app is in version 7.23.8. So we create a branch from mainline for upgrade activity and converted that branch line to version 8.18.15 and later to 9.12.4. Currently our branchline is in version 9.12.4. Meanwhile  some changes happened in mainline so we need to merge the changes in mainline to branch line. while merging we got this error  “Mendix.Modeler.Utility.Progress.ProgressException  ---> Mendix.Modeler.VersionControl.UnsupportedVersionException: The start revision was committed with version 7.23.8.58888 of Mendix Studio Pro. Please install that version first.    at Mendix.Modeler.VersionControl.Operations.Svn.SvnCheckVersionOperation.DoCheckVersion(VersionCheckRequest request) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\Operations\Svn\SvnCheckVersionOperation.cs:line 64    at Mendix.Modeler.VersionControl.Operations.Svn.SvnCheckVersionOperation.Execute(VersionCheckRequest request) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\Operations\Svn\SvnCheckVersionOperation.cs:line 35    at Mendix.Modeler.VersionControl.UpdateWorker.CheckVersion(ICheckConflictState state, IRemoteRepository remoteRepository, IRevLine branchLine, Revision revision, Boolean oneRevisionEarlier, String revisionDescription) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\Update\UpdateWorker.cs:line 51    at Mendix.Modeler.VersionControl.ProcessRunners.CheckVersionStep.<>c__DisplayClass0_0.<Add>b__0(IProgressInfo info) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\ProcessRunners\Merge\MergeSteps\CheckVersionStep.cs:line 22    at Mendix.Modeler.VersionControl.ProcessRunners.MergeProcessStep.<>c__DisplayClass0_0.<AddProcessStep>b__0(IProgressInfo info) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.VersionControl\ProcessRunners\Merge\MergeSteps\MergeProcessStep.cs:line 14    at Mendix.Modeler.Utility.Progress.Step.Run(IProgressInfo info) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.Utility\Progress\Step.cs:line 22    at Mendix.Modeler.UIFramework.Progress.ProcessRunner.RunStep(Step step) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 100    at Mendix.Modeler.UIFramework.Progress.ProcessRunner.OnDoWork(Object sender, DoWorkEventArgs e) in C:\Users\Autobuild\workspace\AppStudio4.0-Build\modeler\Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 74    at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e)    at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)    --- End of inner exception stack trace ---” How to resolve the error?  
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3 answers
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Did you commit your upgrade branch after you upgraded it to 8.18.15? If so, ok, now first make another branch in Mx8.18.15, and make that of your upgrade-branch of the commit you did after upgrading to 8.18.15. Then merge that branch to your upgrade branch.

If you have not commited after upgrading to 8.18.15, you will need to create that first. So create another upgrade-branch, commit it after upgrading to 8.18.15. Now try to import this branch into 9.12.4.

NB 9.12.5 is out since a couple of days and the list of bugfixes it pretty long, so probably useful to go to 9.12.5 while you are at it.

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Hi Gunalan ,

 

The error says like the particular modular version is not installed, so check the version that you have installed.

First upgrade the main line as 9.12.4 and cut the branch line.

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Hi Gunalan,

 

Please check your current branch line and previous as well as version 

 

 

Thanks

-Hari

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