What are the principles involved in “shnayim mikro v'echod targum” for someone travelling from outside the land to Israel when the sedrahs read in those places are different. (I have already asked my Rov for specific guidance; this question is to uncover the principles involved).
For example someone travelling to Israel this week and returning before Shabbos 16 May 15.
2 May 15 Sedrahs outside Israel – Acharei Mos, Kedoshim
2 May 15 Sedrah in Israel – Emor
My assumption is that this person must prepare three sedrahs otherwise he will have lost Acharei Mos, Kedoshim.
9 May 15 Sedrah outside Israel – Emor
9 May 15 Sedrah in Israel – Behar
My assumption is that since this person will be in Israel he must prepare Behar.
16 May 15 Sedrah outside Israel – Behar, Bechukosai
16 May 15 Sedrah in Israel – Bechukosai
"אמר רב הונא בר יהודה אמר רבי אמי: לעולם ישלים אדם פרשיותיו עם הצבור שנים מקרא ואחד תרגום, ואפילו 'עטרות ודיבון', שכל המשלים פרשיותיו עם הצבור מאריכין לו ימיו ושנותיו"
This person will have prepared Behar in the week of 9th May; does he have to repeat it in the week of 16th May so that he finishes his parshiyos with the community?