OK, thanks, the error received implied version 1.4 for online edition:
Possibly unhandled Error: Some widgets are newer, import is failed. Name:[
Services Test]AnchorBarController,1.4,Header,1.4,OverviewMap,1.4,Zoo
mSlider,1.4,HomeButton,1.4,MyLocation,1.4,Coordinate,1.4,Scalebar,1.4,LayerList,
1.4,Legend,1.4,LayerList,1.4,Legend,1.4,Measurement,1.4,Print,1.4
at Function.Promise.reject.Promise.rejected (C:\arcgis-web-appbuilder-1.2\se
rver\node_modules\bluebird\js\main\promise.js:275:21)
at importApp (C:\arcgis-web-appbuilder-1.2\server\rest\apps.js:1:3231)