Migration to ecflow 5 series is straightforward, if you are using ecFlow version 4.7.0 or later. 

Migration( only required for ecflow < 4.7.0)

In most cases we can easily migrate from one version of ecflow to another. Since the checkpoint file will be readable by the new version of ecflow.

However occasionally this may not always be possible. (i.e. if there has been large internal re-factoring). On these occasions we can use ecflow_client --migrate.

The simplest migration involves running:

ecflow_client --migrate > migrate.def # run on old server


migrate.def is like a normal definition file where the state is encoded as comments.
Then run the following with the new client/server:

ecflow_client --load migrate.def # run on new server


This will load the file into the new server preserving all state information.

 If the backup servers functionality is used, then then backup servers should also be migrated at the same time.
The following notes provides more detail guidance on the migration process.
This assumes you are migrating half way through running some experiments,and want to continue where you left.

 Steps for Old server:

     *Only* applicable if starting new server on same machine

 Steps for New server:

However the client/server/GUI between ecflow 4.x.x and ecflow 5.X.Y are not compatible.

Please see Switching between ecFlowUI version 4 and 5


The python api remains backward compatible.

Package Retirement

ecFlowview

The old GUI ecflowview will be retired. 

Trying to maintain two GUI's is to expensive.

ecflowview is MOTIF based, and many Linux distributions have dropped support for it.

QT4

Support for QT4 will be dropped.

Tying to maintain compatibility with QT4 and QT5 is too prohibitive. Some features like QTCharts are only available in QT5

Misc

ECF_NODE can no longer be used in script files(.ecf), it has been replaced with ECF_HOST