Hi,
the reason is an outdated stock scenery. In the MSFS you have only runway 06/24 but in real there are four runways 06L/R and 24L/R … we offer all SIDs and STARs for all four runways but the sim can´t assign it to 06/24 and therefore the sim suppress it.
Left from the real-world charts, right what the MSFS offers - you see in the MSFS you have only 06/24:
Please report this to ASOBO, that this airport is outdated. As option, you can install a 3rd party scenery, which includes all correct runways and here, you will see that you can select all terminal procedures.
Here the 3rd party scenery from EnjoyltFly, directly from the WorldMap:
SIDs:
STARs:
IAPs:
As you see, this is not a data issue, it´s more an MSFS issue with an outdated airport. Hope that helps!
Hope that helps,
Richard