Hi Mark,
Maybe a bug (FM 2016.14.6.100) :
I want to close two useless investments. (EUR-DKK and USD-DKK)
When I close EUR-DKK, this pop-up appears :
"Closing an investment assigned as an exchange rate. Exchange rate will revert to a constant. Continue ?"
Which is OK, I didn't remember it was in my currency templates, and the EUR template is currently loaded, so the pop-up. I click Yes.
I close the USD-DKK investment too.
Then I check in my templates. In the EUR template, DKK entry, it is now at "constant ratio" (as it should)
I load now the USD template and this pop-up appears :
"Unable to fin exchange rate investment for currency 'DKK'. .\USDDKKCUR.dat is not open. Continue opening currency template ?"
I click Yes.
I check in this template that DKK entry is now at "constant ratio", and click OK to close the Currency Settings window.
So OK now, my templates don't use the EUR-DKK and USD-DKK investments anymore. This should be done.
But, now, every time I load one of the templates, I've got this pop-up again :
"Unable to find exchange rate investment for currency 'DKK'. .\USDDKKCUR.dat is not open. Continue opening currency template ?" (replace by \EURDKKCUR.dat for the EUR template).
The only way is to reopen the investments, because FM doesn't let them go...