I've submitted few issues related to QS mapping object in the last few months.
They were accepted as bugs:
QLIK-72410 - "Measure's option is missing in Map Object (in Area Mode)"
QLIK-41808 - "Issues displaying points data on MapObject"
QLIK-69321 - "Color options are corrupted on Map object after migration"
All of the issues are related to app's migration process...
I was told that they will be fixed in 3.2 SR4 (?) or 4.0/4.1 releases later in the year.
The only workaround so far is to re-create the object on the published side and copy/paste all Dimensions and Measures...
Sorry for the bad news, but looks like Qlik wants to push users to buy the newly acquired GeoAnalytics component instead of fixing the simple and default Mapping object....
P.S. When applicable, please mark this answer Correct or Helpful.
Thank you for you quick answer.
I have tried as you said to recreate the maps on the published side but I can't event solve it that way as I get always the same error. The action you are attempting cannot be applied to this visualization.
That is quite unfortunate indeed. I am going to contact the support team to see when they are planning to solve this.
Thanks and Regards,