one day, may help you 
# DNS Cashe To Static Moving Script
# Rename script to "DNS-CTS"
# Moving all alias of host.
{
:if ([:len [/system script job find script="DNS-CTS"]]!=1) do={:log warning "DNS-CTS in processing...";} else={
:local CFlush false;
:foreach Crec in=[/ip dns cache all find where ( ( (type="A") || (type="AAAA") || (type="CNAME") ) && (static=no) )] do={
:local Cname [/ip dns cache get number=$Crec name];
:local Cdata "";
:if ([/ip dns cache all get $Crec type]="CNAME") do={
:set $CFlush true;
:set $Cdata [:resolve $Cname]; } else={
:set $Cdata [/ip dns cache get number=$Crec address]; }
:do {/ip dns static add name=$Cname address=$Cdata disabled=yes } on-error={
:log error message="Moving failure of: Host=$Cname Address=$Cdata"; }
:delay 500ms;
}
:foreach Srec in=[/ip dns static find where disabled=yes] do={
:local Sname [/ip dns static get number=$Srec name];
:local Sdata [/ip dns static get number=$Srec address];
:do {/ip dns static set $Srec disabled=no } on-error={
:log error message="Removing duplication exist: Host=$Sname Address=$Sdata;";
:do {/ip dns static remove numbers=$Srec } on-error={
:log error message="Removing duplication of Host=$Sname Address=$Sdata; failed";} }
:delay 500ms;
}
:if ( $CFlush=true ) do={/ip dns cache flush; :log warning message="DNS Cache Flush Done"; }
:delay 500ms;
}
}
