parameter too difficult to use.

new slapadd options
-p       : promote : If the ldif file contains syncConsumerSubentries, convert
                     them to a single syncProviderSubentry. Its contextCSN
                     attribute has the largest value of the syncreplCookie
                     attributes of the syncConsumerSubentries.
                     syncProviderSubentry in the ldif file is retained.
-p -w    : promote : Recalculate contextCSN based on entryCSN of each entry.
           create    Existing syncConsumerSubentries and syncProviderSubentry
                     are ignored and not added to the directory.
-r       : demote  : If the ldif file contains syncProviderSubentry, convert it
                     to a syncConsumerSubentry having the default syncrepl id
                     of 0. syncConsumerSubentries in the ldif file are retained.
-r -w    : demote  : Recalculate syncreplCookie based on entryCSN of each entry.
           create    Existing syncConsumerSubentries and syncProviderSubentry
                     are ignored and not added to the directory. The default
                     syncrepl id of 0 will be used for the new
                     syncConsumerSubentry.
-r -w -i %d[,%d]*  : Using the comma separated list followed by the -i option,
                     it is possible to create multiple syncConsumerSubentries
                     having the syncrepl ids specified in the list.
                     syncreplCookie values of these sycnConsumerSubentries
                     will have the same value, either from the maximum
                     entryCSN value or from the contextCSN value of the
                     syncProviderSubentry.