(14-10-2019, 07:27 PM)Antti-L Wrote: Ok, thanks for confirming.
I tested now with GAMS v24.7 (your version of GAMS), and I was now immediately able to reproduce the problem!
This indicates that we have a GAMS-related problem here, which is ... hmm... pretty unexpected and possibly a rather serious matter. I am going to have to investigate this to the bottom, so unfortunately no resolution is available at this point (other than maybe by downgrading GAMS). According to my initial tests, GAMS 24.0 and below work as expected. So, GAMS v24.7 produces the unexpected results, but other versions remain to be tested....
Sorry for this, it is getting a bit messy. But occasionally GAMS does have bugs too...
No worries! At least we now seemingly have a clue what is causing the issue. I will keep my eyes and ears open for any update on the matter. In the meantime I will see if I can get hold of version 24.0 of GAMS. [Edit] *the 24.8.5 version it is then. Thank you for your help!
/Erik