Thanks for the replies! i am not a 'computer guy' by any stretch, but i can follow instructions. was pretty sure i was in correct place, but would never get the next 'cache' folder location after 'data' where i found the 'com.spindance.mthremote' file on other devices on the newsest samsung tablet. i find it easily now on old phone running the older android system - so something with newest android os must have changed & will hopefully be addressed with a new version of DCS app, hopefully we get that soon. import/export feature is quite handy.
as a side note which may be helpful for other people; what drove me to a new tablet was that my original primary DCS wifi app remote was a 'cracked' amazon kindle fire - which for the most part worked just fine, even the import/export function. what it did do weird was that it would loose engine name info all the time, but only active engines on powered track & not all of them would loose info. seemed random & did not matter if PS2 3v or 5v or PS3. some times doing several reads would a bring an engine's info back, but if i did another read, it may lose it again. recover engine function did not help either. all inactive engines at time of read would have all their info, but be inactive & if not on a powered track can not be moved to active status. so, i would power up my system, do an engine read, and it could see the engines, it would show their DCS place holder number but no name or identifier info (ie: PR Niagara, GN SD24 #576, etc). not a deal breaker but annoying especially when running multiple engines with no real identifier other than the DCS number. so as a back up, i started using the old samsung note 4 as it never seemed to have this problem (until yesterday it did it on 2 engines, but that is the only time, so far). once i had a good engine list with all info, i would export it & keep as a master when i added new engines or made multiple engine consists and to fix the kindle when it would drop engine info & also keep both remotes the same (all same info, eng's with same place holder numbers)
lastly, my set up is a large seasonal floor layout running through four rooms & a hallway, o-gauge tubular track (lionel 072 & menards 096), rossplate switches (THE BEST), mth z4000 & 2 lionel 180w bricks for power with one handle of z4000 powering individually switched power feeders to sidings & rest powering main lines with feeders every 10 isolated track sections, original tmcc (using gun runner johns tmcc booster) & DCS system (TIU & WIU, no handheld DCS remote)
again, thanks for replies, confirmation, help & co-misery
-travis