fts-flatcurve change index location

hi

is there any way to change location ONLY FOR flatcurve indexes

all I want is to write fts-flatcurve directories outside ~/Maildir path

I do not want to change location of:

dovecot.list.index.log dovecot.mailbox.log dovecot-uidvalidity

Only for flatcurve indexes.

when i set

mail_index_path = ~/Indexes

all indexes are saved to this new location, not just flatcurve

i'm afraid that changing mail_index_path value on production environment is very riski

Thanks