gdxpds.to_gdx changing dataframe order

[DIUANA]

Hi all I hope you are all fine and sage.

I am facing an issue when generating a gdx file with gdxpds.to_gdx function.

I am passing a dictionary with 198 keys and when generating the gdx it is modifyig the order of some sets.

For instance I am providing a dataframe such as this one:

2008 True
2010 True
2015 True
2020 True

And the gdx output is:

2010 Y
2015 Y
2020 Y
2008 Y

It makes difference for the current model I am working on.

Is there any way to keep the passed order when generating the gdx file with gdxpds.to_gdx?

Thanks in advance

Version info:
Python 3.7
GAMS 24.7.4
GAMS 29.1
gdxpds 1.1.0

Edit: I have also tried to implement the backend conversion but it provided me the same output issues.

[jebob]

Can you provide a minimum example?

EDIT: I am guessing that this is due to the UEL being constructed from sets in a particular order.